[bangla]: 83 nb line links replaced by a new link (#11504)

books/free-programming-books-bn.md

@@ -80,5 +80,5 @@
 
 ### Sql
 
-* [এসকিউএল পরিচিতি(SQL Introduction in Bangla)](https://www.sattacademy.com/sql/sql-intro.php) - Satt Academy
+* [এসকিউএল পরিচিতি(SQL Introduction in Bangla)](https://www.sattacademy.org/sql/index.php) - Satt Academy
 * [বাংলায় SQL টিউটোরিয়াল](https://sql.howtocode.dev) - Saiful, et al.