[DOC] Cleanup doc string
[DOC] Cleanup doc string

Change-Id: Ice48b587d60beed0eed8a08e25e720fd3950f35f

wikimedia/pywikibot-core,magul/pywikibot-core,magul/pywikibot-core,PersianWikipedia/pywikibot-core,wikimedia/pywikibot-core