fixup

HeahDude · HeahDude · commit e7391ba8f917 · 2019-04-06T15:02:01.000+02:00
diff --git a/reference/constraints/Traverse.rst b/reference/constraints/Traverse.rst
@@ -21,7 +21,7 @@ In the following example, create three classes ``Book``, ``Author`` and
 ``Editor`` that all have constraints on their properties. Furthermore,
 ``Book`` stores an ``Author`` and an ``Editor`` instance that must be
 valid too. Instead of adding the ``Valid`` constraint to both fields,
-configure the ``Traverse`` constraint on the ``Book`` class.::
+configure the ``Traverse`` constraint on the ``Book`` class.
 
 .. configuration-block::
 
