feature #3548 Update forms.rst (atmosf3ar)

This PR was merged into the 2.3 branch.

Discussion
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Update forms.rst

Hi there,
I thought it would be nice to specify that you can set a label to false to disable it. I needed it for a project, couldn't find it in the doc, and had to search through a couple of stackoverflow posts to find the solution.

Commits
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fb5f12d Update forms.rst
3116b39 Update forms.rst
95b4d40 Update forms.rst

Author: weaverryan

book/forms.rst

@@ -645,7 +645,8 @@ the documentation for each type.
         ))
 
     The label for a field can also be set in the template rendering the
-    form, see below.
+    form, see below. If you don't need a label associated to your input,
+    you can disable it by setting its value to ``false``.
 
 .. index::
    single: Forms; Field type guessing