Fixed errors noticed by Wouter

Author: javiereguiluz

reference/forms/types/file.rst

@@ -105,8 +105,6 @@ type:
 
 .. include:: /reference/forms/types/options/disabled.rst.inc
 
-The default value is ``null``.
-
 .. include:: /reference/forms/types/options/error_bubbling.rst.inc
 
 .. include:: /reference/forms/types/options/error_mapping.rst.inc

reference/forms/types/password.rst

@@ -39,7 +39,7 @@ trim
 **default**: ``false``
 
 Unlike the rest of form types, the ``password`` type doesn't apply the
-phpfunction:`trim` function to the value submitted by the user. This ensures that
+:phpfunction:`trim` function to the value submitted by the user. This ensures that
 the password is merged back onto the underlying object exactly as it was typed
 by the user.