Fix tox -e docs sphinx errors

Change-Id: I6e200558b75ac539b59b492d13c36702443efc89

doc/source/api/temporary_url_middleware.rst

@@ -189,8 +189,8 @@ you can use following code snippet:
     import time
     time.strftime('%Y-%m-%dT%H:%M:%SZ', time.gmtime(timestamp))
 
-Using the ``swift`` tool to generate a Temporary URL 
-~~~~~~~~~~~~~~~~~~~~~
+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/obj/diskfile.py

@@ -793,11 +793,11 @@ class BaseDiskFileManager(object):
                     data_info -> a file info dict for a .data file
                     meta_info -> a file info dict for a .meta file
                     ctype_info -> a file info dict for a .meta file which
-                                  contains the content-type value
+                    contains the content-type value
                     unexpected -> a list of file paths for unexpected
-                                  files
+                    files
                     possible_reclaim -> a list of file info dicts for possible
-                                        reclaimable files
+                    reclaimable files
                     obsolete  -> a list of file info dicts for obsolete files
         """
         # Build the exts data structure:

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.
         """