fix typos.

Author: yositaniwebware

reference/forms/types/options/pattern.rst.inc

@@ -6,13 +6,13 @@ pattern
 This adds an HTML5 ``pattern`` attribute to restrict the field input by a
 given regular expression.
 
-.. caution:
+.. caution::
 
     The ``pattern`` attribute provides client-side validation for convenience
     purposes only and must not be used as a replacement for reliable
     server-side validation.
 
-.. note:
+.. note::
 
     When using validation constraints, this option is set automatically
     for some constraints to match the server-side validation.

reference/forms/types/options/post_max_size_message.rst.inc

@@ -7,6 +7,6 @@ This is the validation error message that's used if submitted POST form data
 exceeds ``php.ini``'s ``post_max_size`` directive. The ``{{ max }}``
 placeholder can be used to display the allowed size.
 
-.. note:
+.. note::
 
     Validating the ``post_max_size`` only happens on the root form.