[FIX] TestLink: Update assertEquals to assertEqual
[FIX] TestLink: Update assertEquals to assertEqual

In e5a24ab3 some tests were added which also used assertEquals which has been
deprecated and replaced by assertEqual.

Change-Id: I77a3f42f05c0aeffa8ba57c49f9f55d61ff0e0d9

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