Updated language names with native language names. (#3754)

* Updated language names with native language names.

All the languages were only present in English, So I added the native language alongside it for better readability.

* Rearranged Indonesian course

Indonesian course was not alphabetically arranged, so sorted that in alphabetical order.

README.md

@@ -27,59 +27,59 @@ Please read [CONTRIBUTING](/CONTRIBUTING.md). If you're new to GitHub, [welcome]
 
 ### In Other Written Languages
 
-+ [Arabic](free-programming-books-ar.md)
-+ [Azerbaijani](free-programming-books-az.md)
-+ [Bengali](free-programming-books-bl.md)
-+ [Bulgarian](free-programming-books-bg.md)
-+ [Burmese](free-programming-books-mm.md)
-+ [Chinese](free-programming-books-zh.md)
-+ [Czech](free-programming-books-cs.md)
-+ [Danish](free-programming-books-dk.md)
-+ [Dutch](free-programming-books-nl.md)
++ [Arabic / al arabiya / العربية](free-programming-books-ar.md)
++ [Azerbaijani / Азәрбајҹан дили / آذربايجانجا ديلي](free-programming-books-az.md)
++ [Bengali / বাংলা](free-programming-books-bl.md)
++ [Bulgarian / български](free-programming-books-bg.md)
++ [Burmese / မြန်မာဘာသာ](free-programming-books-mm.md)
++ [Chinese / 中文](free-programming-books-zh.md)
++ [Czech / čeština / český jazyk](free-programming-books-cs.md)
++ [Danish / dansk](free-programming-books-dk.md)
++ [Dutch / Nederlands](free-programming-books-nl.md)
 + [English](free-programming-books.md)
-+ [Estonian](free-programming-books-et.md)
-+ [Finnish](free-programming-books-fi.md)
-+ [French](free-programming-books-fr.md)
-+ [German](free-programming-books-de.md)
-+ [Greek](free-programming-books-gr.md)
-+ [Hungarian](free-programming-books-hu.md)
-+ [Indonesian](free-programming-books-id.md)
-+ [Italian](free-programming-books-it.md)
-+ [Japanese](free-programming-books-ja.md)
-+ [Korean](free-programming-books-ko.md)
-+ [Persian/Farsi (Iran)](free-programming-books-fa_IR.md)
-+ [Polish](free-programming-books-pl.md)
++ [Estonian / eesti keel](free-programming-books-et.md)
++ [Finnish / suomi / suomen kieli](free-programming-books-fi.md)
++ [French / français](free-programming-books-fr.md)
++ [German / Deutsch](free-programming-books-de.md)
++ [Greek / ελληνικά](free-programming-books-gr.md)
++ [Hungarian / magyar / magyar nyelv](free-programming-books-hu.md)
++ [Indonesian / Bahasa Indonesia](free-programming-books-id.md)
++ [Italian / italiano](free-programming-books-it.md)
++ [Japanese / 日本語](free-programming-books-ja.md)
++ [Korean / 한국어 [韓國語]](free-programming-books-ko.md)
++ [Persian / Farsi (Iran) / فارسى](free-programming-books-fa_IR.md)
++ [Polish / polski / język polski / polszczyzna](free-programming-books-pl.md)
 + [Portuguese (Brazil)](free-programming-books-pt_BR.md)
 + [Portuguese (Portugal)](free-programming-books-pt_PT.md)
-+ [Romanian (Romania)](free-programming-books-ro.md)
-+ [Russian](free-programming-books-ru.md)
-+ [Slovak](free-programming-books-sk.md)
-+ [Spanish](free-programming-books-es.md)
-+ [Swedish](free-programming-books-se.md)
-+ [Tamil](free-programming-books-ta.md)
-+ [Turkish](free-programming-books-tr.md)
-+ [Ukrainian](free-programming-books-ua.md)
++ [Romanian (Romania) / limba română / român](free-programming-books-ro.md)
++ [Russian / Русский язык](free-programming-books-ru.md)
++ [Slovak / slovenčina](free-programming-books-sk.md)
++ [Spanish / español / castellano](free-programming-books-es.md)
++ [Swedish / Svenska](free-programming-books-se.md)
++ [Tamil / தமிழ்](free-programming-books-ta.md)
++ [Turkish / Türkçe](free-programming-books-tr.md)
++ [Ukrainian / Українська](free-programming-books-ua.md)
 
 ### Free Online Courses
 
-+ [Bulgarian](free-courses-bg.md)
++ [Bulgarian / български](free-courses-bg.md)
 + [English](free-courses-en.md)
 + [Finnish](free-courses-fi.md)
-+ [German](free-courses-de.md)
-+ [Indonesian](free-courses-id.md)
-+ [Italian](free-courses-it.md)
-+ [Korean](free-courses-ko.md)
-+ [Polish](free-courses-pl.md)
++ [German / Deutsch](free-courses-de.md)
++ [Indonesian / Bahasa Indonesia](free-courses-id.md)
++ [Italian / italiano](free-courses-it.md)
++ [Korean / 한국어 [韓國語]](free-courses-ko.md)
++ [Polish / polski / język polski / polszczyzna](free-courses-pl.md)
 + [Portuguese (Brazil)](free-courses-pt_BR.md)
-+ [Russian](free-courses-ru.md)
-+ [Spanish](free-courses-es.md)
-+ [Vietnamese](free-courses-vi.md)
++ [Russian / Русский язык](free-courses-ru.md)
++ [Spanish / español / castellano](free-courses-es.md)
++ [Vietnamese / tiếng việt (㗂越)](free-courses-vi.md)
 
 
 ### Interactive Programming Resources
 
 + [English](free-programming-interactive-tutorials-en.md)
-+ [Russian](free-programming-interactive-tutorials-ru.md)
++ [Russian / Русский язык](free-programming-interactive-tutorials-ru.md)
 
 ### Problem Sets and Competitive Programming
 
@@ -89,11 +89,11 @@ Please read [CONTRIBUTING](/CONTRIBUTING.md). If you're new to GitHub, [welcome]
 
 Free Podcasts and Screencasts:
 
-+ [Czech](free-podcasts-screencasts-cs.md)
++ [Czech / čeština / český jazyk](free-podcasts-screencasts-cs.md)
 + [English](free-podcasts-screencasts-en.md)
 + [Portuguese (Brazil)](free-podcasts-screencasts-pt_BR.md)
-+ [Russian](free-podcasts-screencasts-ru.md)
-+ [Swedish](free-podcasts-screencasts-se.md)
++ [Russian / Русский язык](free-podcasts-screencasts-ru.md)
++ [Swedish / Svenska](free-podcasts-screencasts-se.md)
 
 
 ### Programming Playgrounds