Add code review fixes

Author: alexandrunastase

service_container/tags.rst

@@ -585,10 +585,15 @@ application handlers::
         }
     }
 
-Prioritizing Tagged Services
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-The tagged services can be prioritized using the ``priority`` attribute:
+Tagged Services with Priority
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.. versionadded:: 4.4
+
+    The ability to prioritize tagged services was introduced in Symfony 4.4
+
+The tagged services can be prioritized using the ``priority`` attribute, thus providing 
+a way to inject a sorted collection.
 
 .. configuration-block::
 
@@ -689,8 +694,7 @@ If you want to have another method defining the priority, you can define it in t
             // ...
 
             $services->set(App\HandlerCollection::class)
-                ->args(
-                    [
+                ->args([
                         new TaggedIteratorArgument('app.handler', null, null, false, 'getPriority'),
                     ]
                 );