Fix null names in contributors by using username

Co-authored-by: Stalin-143 <161853795+Stalin-143@users.noreply.github.com>

.github/workflows/contributors.yml

@@ -27,6 +27,7 @@ jobs:
           readme_path: "CONTRIBUTORS.md"
           image_size: 100
           columns_per_row: 7
+          use_username: true
           commit_message: "docs: update contributors list"
           committer_username: "github-actions[bot]"
           committer_email: "github-actions[bot]@users.noreply.github.com"

CONTRIBUTORS.md

@@ -22,7 +22,7 @@ This page is automatically updated to recognize everyone who has contributed to
         <a href="https://github.com/HARSHITHA-SREE">
             <img src="https://avatars.githubusercontent.com/u/185629164?v=4" width="100;" alt="HARSHITHA-SREE"/>
             <br />
-            <sub><b>Null</b></sub>
+            <sub><b>HARSHITHA-SREE</b></sub>
         </a>
     </td></tr>
 </table>