Add cht.sh Go Cheatsheet entry (#5769)

* Add cht.sh Go Cheatsheet entry

- A quick tutorial/reference to learn Go.

* Add Go cheatsheet to correct place

- Add Go cht.sh entry to free-programming-cheatsheets.md
- Remove Go cht.sh entry from free-courses-en.md

* Fix blank-lines lint error

more/free-programming-cheatsheets.md

@@ -7,6 +7,7 @@
 * [Clojure](#clojure)
 * [Data Science](#data-science)
 * [Git](#git)
+* [Go](#go)
 * [HTML / CSS](#html--css)
 * [IDE / Editors](#ide--editors)
 * [Java](#java)
@@ -68,6 +69,11 @@
 * [GitHub Cheat Sheet](https://github.com/tiimgreen/github-cheat-sheet) - Tim Green (Markdown)
 
 
+### Go
+
+* [cht.sh Go Cheatsheet](https://cht.sh/go/:learn)
+
+
 ### HTML / CSS
 
 * [CSS CheatSheet](https://htmlcheatsheet.com/css/) (HTML)