Update main.html

Author: SherinDaher-Runai

overrides/main.html

@@ -23,8 +23,7 @@
 
   <!-- Custom Banner -->
   <div class="banner">
-    <span>Explore our new and improved documentation!</span>
-    <a href="https://docshub.run.ai" target="_blank">Learn more</a>
+    Version 2.20 has been deprecated
   </div>
 
 
@@ -101,4 +100,4 @@
       })
     })
   </script>
-{% endblock %}
+{% endblock %}