Fix tox -e docs sphinx errors

Change-Id: I6e200558b75ac539b59b492d13c36702443efc89

doc/source/api/temporary_url_middleware.rst

@@ -190,7 +190,7 @@ you can use following code snippet:
     time.strftime('%Y-%m-%dT%H:%M:%SZ', time.gmtime(timestamp))
 
 Using the ``swift`` tool to generate a Temporary URL
-~~~~~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 The ``swift`` tool provides the  tempurl_ option that
 auto-generates the *``temp_url_sig``* and *``temp_url_expires``* query

swift/proxy/controllers/base.py

@@ -1356,6 +1356,7 @@ class NodeIter(object):
         Install a callback function that will be used during a call to next()
         to get an alternate node instead of returning the next node from the
         iterator.
+
         :param callback: A no argument function that should return a node dict
                          or None.
         """