change versionadded to note directive

Author: OskarStark

form/form_dependencies.rst

@@ -139,10 +139,9 @@ manually and tag it with ``form.type``:
             ->addTag('form.type')
         ;
 
-.. versionadded:: 3.3
+.. note::
 
-    Prior to Symfony 3.3, you needed to define form type services as ``public``.
-    Starting from Symfony 3.3, you can also define them as ``private``.
+    Form type services can be ``public`` or ``private``.
 
 That's it! Your controller - where you create the form - doesn't need to change
 at all: Symfony is smart enough to load the ``TaskType`` from the container.

form/type_guesser.rst

@@ -216,10 +216,9 @@ and tag it with ``form.type_guesser``:
             ->addTag('form.type_guesser')
         ;
 
-.. versionadded:: 3.3
+.. note::
 
-    Prior to Symfony 3.3, you needed to define type guesser services as ``public``.
-    Starting from Symfony 3.3, you can also define them as ``private``.
+    Type guesser services can be ``public`` or ``private``.
 
 .. sidebar:: Registering a Type Guesser in the Component