Changes made (#9706)

* added Java and DSA Foundation Course by College Wallah

* added Java and DSA Foundation Course by College Wallah

* added C++ and DSA Foundation Course by College Wallah

* Changes made

Co-authored-by: Eric Hellman <eric@hellman.net>

---------

Co-authored-by: Eric Hellman <eric@hellman.net>

courses/free-courses-hi.md

@@ -148,7 +148,7 @@
 
 ### <a id="cpp"></a>C++
 
-* [C++ and DSA Foundation Course](https://youtube.com/playlist?list=PLxgZQoSe9cg0df_GxVjz3DD_Gck5tMXAd&si=frggLn7z_DWtYv6I) - College Wallah
+* [C++ and DSA Foundation Course](https://youtube.com/playlist?list=PLxgZQoSe9cg0df_GxVjz3DD_Gck5tMXAd) - College Wallah
 * [C++ Full Course \| C++ Tutorial \| Data Structures & Algorithms](https://www.youtube.com/playlist?list=PLfqMhTWNBTe0b2nM6JHVCnAkhQRGiZMSJ) - Apna College
 * [C++ Full Course \|Complete C++ Placement DSA Course\| Data Structures & Algorithms](https://www.youtube.com/playlist?list=PLDzeHZWIZsTryvtXdMr6rPh4IDexB5NIA) - CodeHelp - by Babbar
 * [C++ Programming in Hindi](https://www.mygreatlearning.com/academy/learn-for-free/courses/c-programming-in-hindi1) - Bharani Akella (My Great Learning)