Fixing rst typos on form help messages chapter

Resources/doc/reference/form_help_message.rst

@@ -1,13 +1,13 @@
 Form Help Messages
-==========
+==================
 
 Help Messages
-------------------------
+-------------
 
 Help messages are short notes that are rendered together with form fields. They are generally used to show additional information so the user can complete the form element faster and more accurately.
 
 Example
-----------------
+-------
 
 .. code-block:: php
 
@@ -25,7 +25,7 @@ Example
     }
 
 Alternative Way To Define Help Messages
-----------------
+---------------------------------------
 
 .. code-block:: php