Add docstring to l10n tests
Add docstring to l10n tests

Bug: T111498
Change-Id: I2362af15fe5bb4ba0a1316983b758a80da35658d

darthbhyrava/pywikibot-local,h4ck3rm1k3/pywikibot-core,magul/pywikibot-core,wikimedia/pywikibot-core,Darkdadaah/pywikibot-core,magul/pywikibot-core,wikimedia/pywikibot-core,npdoty/pywikibot,npdoty/pywikibot,h4ck3rm1k3/pywikibot-core,happy5214/pywikibot-core,happy5214/pywikibot-core,jayvdb/pywikibot-core,jayvdb/pywikibot-core,Darkdadaah/pywikibot-core,icyflame/batman,hasteur/g13bot_tools_new,PersianWikipedia/pywikibot-core,hasteur/g13bot_tools_new,smalyshev/pywikibot-core,hasteur/g13bot_tools_new