Add mosh hamedani git cheatsheet (pdf) (#6933)

* Add mosh hamedani git cheatsheet (pdf)

* fix linter error.

* remove unwanted line

* Update free-programming-cheatsheets.md

more/free-programming-cheatsheets.md

@@ -114,6 +114,7 @@
 * [Git Cheat Sheet](http://git.jk.gs) - Jan Krüger (PDF, SVG)
   * [Git Cheat Sheet](https://jan-krueger.net/wordpress/wp-content/uploads/2007/09/git-cheat-sheet.pdf) (PDF)
   * [Git Cheat Sheet - extended](https://jan-krueger.net/wordpress/wp-content/uploads/2007/09/git-cheat-sheet-v2.zip) (PDF)
+* [Git Cheat Sheet](https://programmingwithmosh.com/wp-content/uploads/2020/09/Git-Cheat-Sheet.pdf) - Moshfegh Hamedani (PDF)
 * [Git ściąga (pl)](https://training.github.com/downloads/pl/github-git-cheat-sheet/) - GitHub
 * [GitHub Cheat Sheet](https://github.com/tiimgreen/github-cheat-sheet) - Tim Green (Markdown)