[docs] TypeError in smtpd module with string arguments (issue 26209)

[ghost.adh at runbox.com]

https://bugs.python.org/review/26209/diff/18092/Doc/library/smtpd.rst
File Doc/library/smtpd.rst (right):

https://bugs.python.org/review/26209/diff/18092/Doc/library/smtpd.rst#newcode36
Doc/library/smtpd.rst:36: the parameters *localaddr* and *remoteaddr*
should be a tuple in form ``("host",portnumber)``,
The lines are still wider than 80 columns. Also, please add a space
before word portnumber.

https://bugs.python.org/review/26209/