minor symfony#3967 fix typo. (yositani2002)

This PR was merged into the 2.3 branch.

Discussion
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fix typo.

two notes does not show.

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | all
| Fixed tickets |

Commits
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957c46d fix typo.

Author: weaverryan

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

@@ -17,14 +17,14 @@ used to decide whether to process the form submission in the
 * DELETE
 * PATCH
 
-.. note:
+.. note::
 
     When the method is PUT, PATCH, or DELETE, Symfony will automatically
     render a ``_method`` hidden field in your form. This is used to "fake"
     these HTTP methods, as they're not supported on standard browsers. For
     more information, see :doc:`/cookbook/routing/method_parameters`.
 
-.. note:
+.. note::
 
     The PATCH method allows submitting partial data. In other words, if the
     submitted form data is missing certain fields, those will be ignored