Install requirements in RTD (#3224)
Install requirements in RTD (#3224)

Fixes #3221

Ref: https://docs.rtfd.io/en/latest/yaml-config.html
arthurdarcet/aiohttp,KeepSafe/aiohttp,arthurdarcet/aiohttp,KeepSafe/aiohttp,arthurdarcet/aiohttp,KeepSafe/aiohttp