Fix the regex to match IPv4 addresses.
Fix the regex to match IPv4 addresses.

overcastcloud/trollius,haypo/trollius,jashandeep-sohi/asyncio,ajdavis/asyncio,gsb-eng/asyncio,manipopopo/asyncio,leetreveil/tulip,gvanrossum/asyncio,gsb-eng/asyncio,leetreveil/tulip,Martiusweb/asyncio,fallen/asyncio,vxgmichel/asyncio,haypo/trollius,fallen/asyncio,leetreveil/tulip,Martiusweb/asyncio,manipopopo/asyncio,haypo/trollius,gvanrossum/asyncio,ajdavis/asyncio,1st1/asyncio,vxgmichel/asyncio,vxgmichel/asyncio,gsb-eng/asyncio,overcastcloud/trollius,overcastcloud/trollius,1st1/asyncio,gvanrossum/asyncio,Martiusweb/asyncio,manipopopo/asyncio,jashandeep-sohi/asyncio,fallen/asyncio,1st1/asyncio,ajdavis/asyncio,jashandeep-sohi/asyncio