bug #3535 fix form type name. (yositani2002)

This PR was merged into the 2.3 branch.

Discussion
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fix form type name.

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

Commits
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ef4014d fix form type.

reference/forms/types/timezone.rst

@@ -12,7 +12,7 @@ or ``Europe/Istanbul``.
 
 Unlike the ``choice`` type, you don't need to specify a ``choices`` or
 ``choice_list`` option as the field type automatically uses a large list
-of locales. You *can* specify either of these options manually, but then
+of timezones. You *can* specify either of these options manually, but then
 you should just use the ``choice`` type directly.
 
 +-------------+------------------------------------------------------------------------+