[i18n] Fix Czech (cs) summary in standardize_interwiki.py
[i18n] Fix Czech (cs) summary in standardize_interwiki.py

Bug: T168798
Change-Id: I07604123e8743cd5c6688ce843164662a1e8d72c

wikimedia/pywikibot-core,happy5214/pywikibot-core,npdoty/pywikibot,PersianWikipedia/pywikibot-core,hasteur/g13bot_tools_new,happy5214/pywikibot-core,npdoty/pywikibot,magul/pywikibot-core,magul/pywikibot-core,wikimedia/pywikibot-core,hasteur/g13bot_tools_new,hasteur/g13bot_tools_new