Docstring consistency with the updated .tex files.

Lib/email/MIMEMultipart.py

@@ -15,7 +15,7 @@ class MIMEMultipart(MIMEBase.MIMEBase):
         """Creates a multipart/* type message.
 
         By default, creates a multipart/mixed message, with proper
-        Content-Type: and MIME-Version: headers.
+        Content-Type and MIME-Version headers.
 
         _subtype is the subtype of the multipart content type, defaulting to
         `mixed'.
@@ -23,11 +23,11 @@ class MIMEMultipart(MIMEBase.MIMEBase):
         boundary is the multipart boundary string.  By default it is
         calculated as needed.
 
-        _subparts is a sequence of initial subparts for the multipart.  It
+        _subparts is a sequence of initial subparts for the payload.  It
         must be possible to convert this sequence to a list.  You can always
         attach new subparts to the message by using the attach() method.
 
-        Additional parameters for the Content-Type: header are taken from the
+        Additional parameters for the Content-Type header are taken from the
         keyword arguments (or passed into the _params argument).
         """
         MIMEBase.MIMEBase.__init__(self, 'multipart', _subtype, **_params)