[#7767] remove trailing space

xabbuh · xabbuh · commit fc700988bbbb · 2017-07-21T12:19:40.000+02:00
diff --git a/reference/forms/types/collection.rst b/reference/forms/types/collection.rst
@@ -277,7 +277,7 @@ the empty values will be kept.
 
     The ``delete_empty`` option only removes items when the normalized value is
     ``null``. If the nested `type`_ is a compound form type, you must either set
-    the ``required`` option to ``false`` or set the ``empty_data`` option to 
+    the ``required`` option to ``false`` or set the ``empty_data`` option to
     ``null``. Both of these options can be set inside `options`_. Read about
     the :ref:`form's empty_data option <reference-form-option-empty-data>`
     to learn why this is necessary.
