Added course in android development in hindi (#4616)

* Added course in android development by Harry

* Update free-courses-hi.md

Co-authored-by: Seth <seth@elypia.org>

Co-authored-by: Seth <seth@elypia.org>

free-courses-hi.md

@@ -1,5 +1,6 @@
 ### Index
 
+* [Android](#Android)
 * [C](#C)
 * [C++](#C++)
 * [Data Structures](#DataStructures)
@@ -8,6 +9,11 @@
 * [Python](#Python)
 
 
+### Android
+
+* [Android Development Tutorials in Hindi](https://www.youtube.com/playlist?list=PLu0W_9lII9aiL0kysYlfSOUgY5rNlOhUd) - Harry
+
+
 ### C
 
 * [All C Concepts | Hindi](https://www.youtube.com/playlist?list=PL7ersPsTyYt1d8g5qaxbE6sjWDzs4D_1v) - Saurabh Shukla
@@ -38,4 +44,3 @@
 ### Python
 
 * [Python Tutorial For Beginners | Hindi (With Notes)](https://www.youtube.com/playlist?list=PLu0W_9lII9agICnT8t4iYVSZ3eykIAOME) - Harry
-