[docs] Revert #44388 (#44454)

Co-authored-by: Bharat Kashyap <[email protected]>

Author: prakhargupta1

docs/data/material/components/snackbars/snackbars.md

@@ -141,7 +141,7 @@ The Snackbar component is composed of a root `<div>` that houses interior elemen
 </div>
 ```
 
-## Toolpad (Beta)
+## Experimental APIs - Toolpad
 
 ### useNotifications