Fix style.

Doc/library/email.generator.rst

@@ -83,8 +83,8 @@ Here are the public methods of the :class:`Generator` class, imported from the
       message structure will be converted to '?' characters.
 
       .. versionchanged:: 3.2
-         added support for re-encoding 8bit message bodies, and the linesep
-         argument
+         Added support for re-encoding 8bit message bodies, and the *linesep*
+         argument.
 
    .. method:: clone(fp)
 

Doc/library/email.header.rst

@@ -120,7 +120,8 @@ Here is the :class:`Header` class description:
       application code (``\n``), but ``\r\n`` can be specified in order
       to produce headers with RFC-compliant line separators.
 
-      .. versionchanged:: 3.2 added the linesep argument
+      .. versionchanged:: 3.2
+         Added the *linesep* argument.
 
 
    The :class:`Header` class also provides a number of methods to support