Merge markup fixes in smtpd.rst with 3.2.

diff --cc Doc/library/smtpd.rst
index 6dd477ad06633c09a427383939e927f86cc83017,bfdc7271f769ed74ed57fa8da86546920521d619..2ca71ffc3ccd1d2a5955951a30b94d94f75a998e
--- 1/Doc/library/smtpd.rst
--- 2/Doc/library/smtpd.rst
+++ b/Doc/library/smtpd.rst
@@@ -168,17 -160,12 +169,17 @@@ SMTPChannel Object
     NOOP     Takes no action.
     QUIT     Closes the connection cleanly.
     MAIL     Accepts the "MAIL FROM:" syntax and stores the supplied address as
 -            :attr:`mailfrom`.
 +            :attr:`mailfrom`.  In extended command mode, accepts the
 +            :rfc:`1870` SIZE attribute and responds appropriately based on the
-             value of ``data_size_limit``.
++            value of *data_size_limit*.
     RCPT     Accepts the "RCPT TO:" syntax and stores the supplied addresses in
              the :attr:`rcpttos` list.
     RSET     Resets the :attr:`mailfrom`, :attr:`rcpttos`, and
              :attr:`received_data`, but not the greeting.
     DATA     Sets the internal state to :attr:`DATA` and stores remaining lines
              from the client in :attr:`received_data` until the terminator
-             "\r\n.\r\n" is received.
+             ``"\r\n.\r\n"`` is received.
 +   HELP     Returns minimal information on command syntax
 +   VRFY     Returns code 252 (the server doesn't know if the address is valid)
 +   EXPN     Reports that the command is not implemented.
     ======== ===================================================================