Update doc for ClientResponse.json()
Update doc for ClientResponse.json()

panda73111/aiohttp,mind1master/aiohttp,z2v/aiohttp,z2v/aiohttp,elastic-coders/aiohttp,alex-eri/aiohttp-1,rutsky/aiohttp,AraHaanOrg/aiohttp,juliatem/aiohttp,esaezgil/aiohttp,decentfox/aiohttp,arthurdarcet/aiohttp,decentfox/aiohttp,vaskalas/aiohttp,pfreixes/aiohttp,jashandeep-sohi/aiohttp,singulared/aiohttp,KeepSafe/aiohttp,jashandeep-sohi/aiohttp,panda73111/aiohttp,vaskalas/aiohttp,arthurdarcet/aiohttp,Eyepea/aiohttp,mind1master/aiohttp,AraHaanOrg/aiohttp,KeepSafe/aiohttp,playpauseandstop/aiohttp,arthurdarcet/aiohttp,panda73111/aiohttp,alex-eri/aiohttp-1,rutsky/aiohttp,mind1master/aiohttp,alex-eri/aiohttp-1,elastic-coders/aiohttp,singulared/aiohttp,moden-py/aiohttp,jettify/aiohttp,vaskalas/aiohttp,hellysmile/aiohttp,moden-py/aiohttp,jettify/aiohttp,elastic-coders/aiohttp,singulared/aiohttp,esaezgil/aiohttp,juliatem/aiohttp,hellysmile/aiohttp,esaezgil/aiohttp,rutsky/aiohttp,decentfox/aiohttp,moden-py/aiohttp,z2v/aiohttp,jettify/aiohttp,pfreixes/aiohttp,KeepSafe/aiohttp,jashandeep-sohi/aiohttp