Fix docs build warnings
Fix docs build warnings

avanov/aiohttp,vaskalas/aiohttp,arthurdarcet/aiohttp,AraHaanOrg/aiohttp,vasylbo/aiohttp,pathcl/aiohttp,iksteen/aiohttp,Insoleet/aiohttp,jojurajan/aiohttp,moden-py/aiohttp,decentfox/aiohttp,arthurdarcet/aiohttp,moden-py/aiohttp,z2v/aiohttp,juliatem/aiohttp,moden-py/aiohttp,vaskalas/aiohttp,esaezgil/aiohttp,KeepSafe/aiohttp,z2v/aiohttp,flying-sheep/aiohttp,jettify/aiohttp,AlexLisovoy/aiohttp,rutsky/aiohttp,Eyepea/aiohttp,singulared/aiohttp,hellysmile/aiohttp,saghul/aiohttp,arthurdarcet/aiohttp,sterwill/aiohttp,danielnelson/aiohttp,esaezgil/aiohttp,alexsdutton/aiohttp,jojurajan/aiohttp,alunduil/aiohttp,hellysmile/aiohttp,z2v/aiohttp,jettify/aiohttp,AraHaanOrg/aiohttp,Srogozins/aiohttp,vaskalas/aiohttp,AlexLisovoy/aiohttp,decentfox/aiohttp,panda73111/aiohttp,iksteen/aiohttp,vedun/aiohttp,mind1master/aiohttp,alex-eri/aiohttp-1,rutsky/aiohttp,rutsky/aiohttp,saghul/aiohttp,alex-eri/aiohttp-1,decentfox/aiohttp,pfreixes/aiohttp,playpauseandstop/aiohttp,jettify/aiohttp,elastic-coders/aiohttp,alexsdutton/aiohttp,panda73111/aiohttp,mind1master/aiohttp,noplay/aiohttp,morgan-del/aiohttp,KeepSafe/aiohttp,jashandeep-sohi/aiohttp,esaezgil/aiohttp,jashandeep-sohi/aiohttp,noplay/aiohttp,noodle-learns-programming/aiohttp,panda73111/aiohttp,juliatem/aiohttp,alex-eri/aiohttp-1,elastic-coders/aiohttp,elastic-coders/aiohttp,pfreixes/aiohttp,mind1master/aiohttp,singulared/aiohttp,andyaguiar/aiohttp,singulared/aiohttp,jashandeep-sohi/aiohttp,KeepSafe/aiohttp