[10.x] Example for multiple middleware parameters delimited by comma. (laravel#9167)

* Middleware multiple parameters example

* Update middleware.md

---------

Co-authored-by: Taylor Otwell <[email protected]>

Author: nasirhumbatli

middleware.md

@@ -281,12 +281,18 @@ Additional middleware parameters will be passed to the middleware after the `$ne
 
     }
 
-Middleware parameters may be specified when defining the route by separating the middleware name and parameters with a `:`. Multiple parameters should be delimited by commas:
+Middleware parameters may be specified when defining the route by separating the middleware name and parameters with a `:`:
 
     Route::put('/post/{id}', function (string $id) {
         // ...
     })->middleware('role:editor');
 
+Multiple parameters may be delimited by commas:
+
+    Route::put('/post/{id}', function (string $id) {
+        // ...
+    })->middleware('role:editor,publisher');
+
 <a name="terminable-middleware"></a>
 ## Terminable Middleware