remove space inside link text (#3114)

free-courses-en.md

@@ -149,7 +149,7 @@
 * [Deep Learning for Natural Language Processing](http://cs224d.stanford.edu)
 * [MIT 6.S094: Deep Learning for Self-Driving Cars](https://selfdrivingcars.mit.edu)
 * [Practical Deep Learning For Coders taught](http://www.fast.ai) - Jeremy Howard
-* [Self-Paced Courses for Deep Learning ](https://developer.nvidia.com/deep-learning-courses)
+* [Self-Paced Courses for Deep Learning](https://developer.nvidia.com/deep-learning-courses)
 * [Unsupervised Feature Learning and Deep Learning](http://deeplearning.stanford.edu/tutorial)
 * [What is Deep Learning](https://www.udacity.com/course/deep-learning--ud730)
 
@@ -288,7 +288,7 @@
 * [Embedded Software Safety](https://www.youtube.com/playlist?list=PLAQopGWlIcyaqDBW1zSKx7lHfVcOmWSWt) (P. Koopman)
 * [FindLectures.com](https://www.findlectures.com/?class1=Technology) - Index of conference talks by language / topic
 * [LouvainX Paradigms of Computer Programming – Abstraction and Concurrency](https://www.edx.org/course/paradigms-computer-programming-louvainx-louv1-2x-1#!)
-* [LouvainX Paradigms of Computer Programming – Fundamentals ](https://www.edx.org/course/paradigms-computer-programming-louvainx-louv1-1x-1)
+* [LouvainX Paradigms of Computer Programming – Fundamentals](https://www.edx.org/course/paradigms-computer-programming-louvainx-louv1-1x-1)
 * [MIT 6.S099: Artificial General Intelligence](https://agi.mit.edu)
 * [MIT Numerical Methods (2014)](http://www.iitg.ernet.in/kartha/CE601-14/CourseSchedule.htm)
 * [MIT's Artificial Intelligence](http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-034-artificial-intelligence-fall-2010/)

free-courses-es.md

@@ -110,7 +110,7 @@
 * [Compiladores e Intérpretes (2012)](http://ocw.uji.es/curso/4949)
 * [Procesadores de lenguaje (2006)](https://ocw.ua.es/es/ingenieria-y-arquitectura/procesadores-de-lenguaje-2006.html)
 * [Procesadores de Lenguaje (2012)](http://ocw.uji.es/curso/5180)
-* [Procesadores de lenguajes -enfocado en Perl- ](https://campusvirtual.ull.es/ocw/course/view.php?id=45)
+* [Procesadores de lenguajes -enfocado en Perl-](https://campusvirtual.ull.es/ocw/course/view.php?id=45)
 * [Procesadores de lenguajes II](https://ocw.uca.es/course/view.php?id=56)
 
 

free-podcasts-screencasts-en.md

@@ -44,7 +44,7 @@
 ### C++
 
 * [C++ Programming Video Lectures](https://www.youtube.com/playlist?list=PLTZbNwgO5ebo64D1k0DJQGX30X6iSTmRr) (screencast)
-* [C++ STL ](https://www.youtube.com/playlist?list=PL5jc9xFGsL8G3y3ywuFSvOuNm3GjBwdkb) (screencast)
+* [C++ STL](https://www.youtube.com/playlist?list=PL5jc9xFGsL8G3y3ywuFSvOuNm3GjBwdkb) (screencast)
 * [CppCast](http://cppcast.com) (podcast)
 
 

free-programming-books-ja.md

@@ -142,7 +142,7 @@
 * [組込みシステムの安全性向上の勧め（機能安全編）](http://www.ipa.go.jp/files/000005118.pdf) - 独立行政法人 情報処理推進機構(IPA) (PDF)
 * [組込みソフトウェア開発におけるプロジェクトマネジメント導入の勧め](http://www.ipa.go.jp/files/000005105.pdf) - 独立行政法人 情報処理推進機構(IPA) (PDF)
 * [組込みソフトウェア開発における品質向上の勧め [バグ管理手法編]](http://www.ipa.go.jp/files/000027629.pdf) - 独立行政法人 情報処理推進機構(IPA) (PDF)
-* [組込みソフトウェア開発における品質向上の勧め [ユーザビリティ編] ](http://www.ipa.go.jp/files/000005114.pdf) - 独立行政法人 情報処理推進機構(IPA) (PDF)
+* [組込みソフトウェア開発における品質向上の勧め [ユーザビリティ編]](http://www.ipa.go.jp/files/000005114.pdf) - 独立行政法人 情報処理推進機構(IPA) (PDF)
 * [組込みソフトウェア開発における品質向上の勧め [設計モデリング編]](http://www.ipa.go.jp/files/000005113.pdf) - 独立行政法人 情報処理推進機構(IPA) (PDF)
 * [組込みソフトウェア開発における品質向上の勧め（コーディング編）](http://www.ipa.go.jp/files/000005106.pdf) - 独立行政法人 情報処理推進機構(IPA) (PDF)
 * [組込みソフトウェア開発における品質向上の勧め［テスト編～事例集～］](http://www.ipa.go.jp/files/000005149.pdf) - 独立行政法人 情報処理推進機構(IPA) (PDF)
@@ -601,7 +601,7 @@
 
 ### Scratch
 
-* [炎の型 With Scratch (ゲームプログラム入門) ](https://kyorohiro.gitbooks.io/doc_scratch/) - kyorohiro
+* [炎の型 With Scratch (ゲームプログラム入門)](https://kyorohiro.gitbooks.io/doc_scratch/) - kyorohiro
 
 
 ### sed

free-programming-books-pt_BR.md

@@ -134,7 +134,7 @@
 
 #### Ember.js
 
-* [Conceitos basicos do Ember.js ](http://fabriciotav.org/blog/2013/02/20/conceitos-basicos-do-emberjs.html)
+* [Conceitos basicos do Ember.js](http://fabriciotav.org/blog/2013/02/20/conceitos-basicos-do-emberjs.html)
 * [Handlebars Helpers com Ember.js](http://fabriciotav.org/blog/2013/02/20/handlebars-helpers-com-emberjs.html)
 
 
@@ -251,7 +251,7 @@
 ### Shell
 
 * [Introdução ao Shell Script](http://aurelio.net/shell/apostila-introducao-shell.pdf) - Aurelio Marinho Jargas (PDF)
-* [Pequena introdução ao linux e ao Shell Script ](https://www.telecom.uff.br/pet/petws/downloads/apostilas/LINUX.pdf) (PDF)
+* [Pequena introdução ao linux e ao Shell Script](https://www.telecom.uff.br/pet/petws/downloads/apostilas/LINUX.pdf) (PDF)
 * [Shell Script do Zero](http://metamorphoselinux.net/Shell_Script_do_Zero.pdf) (PDF)
 
 

free-programming-books-zh.md

@@ -164,7 +164,7 @@
 
 ### 操作系统
 
-* [Debian 参考手册 ](http://man.chinaunix.net/linux/debian/reference/reference.zh-cn.html)
+* [Debian 参考手册](http://man.chinaunix.net/linux/debian/reference/reference.zh-cn.html)
 * [Docker —— 从入门到实践](https://github.com/yeasy/docker_practice)
 * [Docker中文指南](https://github.com/widuu/chinese_docker)
 * [Docker入门实战](http://yuedu.baidu.com/ebook/d817967416fc700abb68fca1)
@@ -177,7 +177,7 @@
 * [Mac 开发配置手册](https://aaaaaashu.gitbooks.io/mac-dev-setup/content/)
 * [Operating Systems: Three Easy Pieces](http://pages.cs.wisc.edu/~remzi/OSTEP/)
 * [The Linux Command Line](http://billie66.github.io/TLCL/index.html) (中英文版)
-* [Ubuntu 参考手册 ](http://wiki.ubuntu.org.cn/UbuntuManual)
+* [Ubuntu 参考手册](http://wiki.ubuntu.org.cn/UbuntuManual)
 * [uCore Lab: Operating System Course in Tsinghua University](https://www.gitbook.com/book/objectkuan/ucore-docs/details)
 * [UNIX TOOLBOX](http://cb.vu/unixtoolbox_zh_CN.xhtml)
 * [命令行的艺术](https://github.com/jlevy/the-art-of-command-line/blob/master/README-zh.md)
@@ -329,7 +329,7 @@
 
 ### C Sharp
 
-* [精通C#(第6版) ](http://book.douban.com/subject/24827879/)
+* [精通C#(第6版)](http://book.douban.com/subject/24827879/)
 
 
 ### C++

free-programming-books.md

@@ -548,7 +548,7 @@
 * [Pointers And Memory](http://cslibrary.stanford.edu/102/PointersAndMemory.pdf) (PDF)
 * [Practical Data Analysis](https://www.packtpub.com/packt/free-ebook/practical-data-analysis) - Hector Cuesta, Packt. (email address *requested*, not required)
 * [Practical Responsive Typography](https://www.packtpub.com/packt/free-ebook/practical-responsive-typography) - Dario Calonaci, Packt. (email address *requested*, not required)
-* [Principles of Computer System Design ](http://ocw.mit.edu/resources/res-6-004-principles-of-computer-system-design-an-introduction-spring-2009/online-textbook/part_ii_open_5_0.pdf) (PDF)
+* [Principles of Computer System Design](http://ocw.mit.edu/resources/res-6-004-principles-of-computer-system-design-an-introduction-spring-2009/online-textbook/part_ii_open_5_0.pdf) (PDF)
 * [Procedural Content Generation in Games](http://pcgbook.com) - Noor Shaker, Julian Togelius, Mark Nelson
 * [Programming with Unicode](http://unicodebook.readthedocs.org)
 * [Real-World Maintainable Software](http://www.oreilly.com/programming/free/real-world-maintainable-software.csp) (email address *requested*, not required)
@@ -616,7 +616,7 @@
 
 * [A short introduction to operating systems (2001)](http://markburgess.org/os/os.pdf) - Mark Burgess (PDF)
 * [Computer Science from the Bottom Up](http://www.bottomupcs.com)
-* [How to Make a Computer Operating System ](https://github.com/SamyPesse/How-to-Make-a-Computer-Operating-System) (:construction: *in process*)
+* [How to Make a Computer Operating System](https://github.com/SamyPesse/How-to-Make-a-Computer-Operating-System) (:construction: *in process*)
 * [How to write a simple operating system in assembly language](http://mikeos.sourceforge.net/write-your-own-os.html) - Mike Saunders (HTML)
 * [Operating Systems and Middleware](https://gustavus.edu/mcs/max/os-book/) (PDF and LaTeX)
 * [Operating Systems: Three Easy Pieces](http://pages.cs.wisc.edu/~remzi/OSTEP/) (PDF)