[bugfix] Fix a typo in 316378c7e7c59c3
[bugfix] Fix a typo in 316378c7e7c59c3

a typo producing a warning in doc test

Change-Id: Ia1adc3a9889bd194f378d42f674d8d11f240c115

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