docs(arc-docs): review changes

review changes

GH-26

Author: Deepika516

projects/arc-docs/src/app/docs/guide/components/backend-integration-doc/backend-integration-doc.component.html

@@ -22,7 +22,7 @@ <h2 class="nb-card-header-title">Prerequisites</h2>
         <ul>
           <li>Node.js and npm installed</li>
           <li>Angular CLI installed</li>
-          <li>PostgreSQL installed</li>
+          <li>A data source installed (e.g., PostgreSQL, MySQL.)</li>
           <li>Redis installed</li>
           <li>Basic knowledge of Angular and REST APIs</li>
         </ul>