Update free-courses-hi.md (#9610)

* Update free-courses-hi.md

Flutter Hindi Course Added

* fix url

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

courses/free-courses-hi.md

@@ -324,6 +324,7 @@
 * [Flutter Series 2020](https://www.youtube.com/playlist?list=PLDzeHZWIZsTo3Cs115GXkot28i406511Y) - CodeHelp - by Babbar
 * [Flutter Tutorial For Beginners in Hindi](https://youtube.com/playlist?list=PLMkkZSS5OjPIwDyHHKVex6zr008U1-sWM) - Geeks Rank
 * [Flutter Widgets in Hindi](https://www.youtube.com/playlist?list=PLz7ymP4HzwSH3vAnhDWLkO2TLbwGeigl7) - Ahirlog
+* [Master Flutter in Just 8 Hours \| Full Course Hindi](https://www.youtube.com/watch?v=j-LOab_PzzU) - Codepur
 
 
 ### Game Development