Update free-programming-books-tr.md (#11189)

Add ProGit book the official Git Documentation

Author: murat-yasar

books/free-programming-books-tr.md

@@ -70,6 +70,7 @@
 * [git - basit rehber](https://rogerdudler.github.io/git-guide/index.tr.html) - Roger Dudler (HTML)
 * [Git 101](https://aliozgur.gitbooks.io/git101/) - Ali Özgür (GitBook)
 * [Git ve Github Rehberi](https://github.com/mkdemir/Git_ve_Github_Rehberi) - Mustafa Kaan Demir
+* [Pro Git](https://git-scm.com/book/tr/v2) - Scott Chacon, Ben Straub (Çeviri: Murat Yaşar)
 
 
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