Fix case. Php < PHP (#11572)

* Fix case. Php < PHP

* Update title in PHP section as per title of web page

* Rearrange items in alphabetical order

books/free-programming-books-hi.md

@@ -62,7 +62,7 @@
 * [ डाटा कयनकेशन एंड कंयटर नेटवक ](https://www.aicte-india.org/sites/default/files/HINDI_BOOKS/BOOK%203.pdf) -  ई.हरश दाधीच, ई.वकास माथर (PDF)
 
 
-### Php
+### PHP
 
-* [Php \| Hindi](https://www.learnhindituts.com/php) - LearnHindiTuts.com
-* [Php Hindi Tutorial \| Hindi](http://tutorialsroot.com/php/index.html) - TutorialsRoot.com
+* [PHP In Hindi Tutorial](http://tutorialsroot.com/php/index.html) - TutorialsRoot.com
+* [PHP Tutorials In Hindi](https://www.learnhindituts.com/php) - LearnHindiTuts.com