Fix typo (#11083)

* Update free-programming-books-fa_IR.md

The Tao of Programming

* Update free-programming-books-fa_IR.md

Reorder alphabetically.

* fix PDF indication

add pdf type of file

* fix space in pdf indication

fix space in pdf indication

* Update free-programming-books-fa_IR.md

fix typo

Author: esmaeelE

Diff for: books/free-programming-books-fa_IR.md

@@ -86,4 +86,4 @@
 
 * [تحلیل شبکه‌های اجتماعی در R](http://cran.r-project.org/doc/contrib/Raeesi-SNA_in_R_in_Farsi.pdf) (PDF)
 * [راهنمای زبان R](http://cran.r-project.org/doc/contrib/Mousavi-R-lang_in_Farsi.pdf) (PDF)
-* [موضعات ویژه در R](http://cran.r-project.org/doc/contrib/Mousavi-R_topics_in_Farsi.pdf) (PDF)
+* [مباحث ویژه در R](http://cran.r-project.org/doc/contrib/Mousavi-R_topics_in_Farsi.pdf) (PDF)