Added My Username in authors file and updated sql.md

Author: Hitesh4278

blog/authors.yml

@@ -20,3 +20,10 @@ ajay-dhangar_2020:
   title: Frontend Developer
   url: https://github.com/ajay-dhangar
   image_url: https://avatars.githubusercontent.com/u/99037494?v=4
+
+hitesh-gahanolia:
+  name: Hitesh Gahanolia
+  tile: Final Year Student At MNNIT ALLAHABAD
+  url: https://github.com/Hitesh4278
+  image_url: https://avatars.githubusercontent.com/u/97452642?v=4
+

blog/sql.md

@@ -1,7 +1,7 @@
 ---
 title: 'SQL'
 sidebar_label: SQL - Structured Query Language
-authors: [ajay-dhangar]
+authors: [hitesh-gahanolia]
 tags: [sql , databases , data]
 date: 2024-06-12 5:17
 hide_table_of_contents: true