Fix typo in comment.

Ira Lun

2017-04-16 2665135c841b250ffc89371cff0f16bb1de7d362

Fix typo in comment.

(cherry picked from commit 999bdae)

 pyramid/config/views.py

@@ -972,7 +972,7 @@
        def register_view(classifier, request_iface, derived_view):
            # A multiviews is a set of views which are registered for
            # exactly the same context type/request type/name triad.  Each
            # consituent view in a multiview differs only by the
            # constituent view in a multiview differs only by the
            # predicates which it possesses.

            # To find a previously registered view for a context