Update cat image in README
Update cat image in README

Now it's hosted in this repo
eamanu/Chaos,mark-i-m/Chaos,rudehn/chaos,Chaosthebot/Chaos,g19fanatic/chaos,eukaryote31/chaos,rudehn/chaos,eamanu/Chaos,phil-r/chaos,chaosbot/Chaos,chaosbot/Chaos,mpnordland/chaos,phil-r/chaos,mpnordland/chaos,mark-i-m/Chaos,g19fanatic/chaos,rudehn/chaos,hongaar/chaos,amoffat/Chaos,mark-i-m/Chaos,Chaosthebot/Chaos,eukaryote31/chaos,chaosbot/Chaos,chaosbot/Chaos,botchaos/Chaos,eukaryote31/chaos,hongaar/chaos,eukaryote31/chaos,mpnordland/chaos,amoffat/Chaos,amoffat/Chaos,g19fanatic/chaos,hongaar/chaos,botchaos/Chaos,phil-r/chaos,g19fanatic/chaos,botchaos/Chaos,g19fanatic/chaos,mpnordland/chaos,botchaos/Chaos,eamanu/Chaos,Chaosthebot/Chaos,hongaar/chaos,rudehn/chaos,mpnordland/chaos,rudehn/chaos,mark-i-m/Chaos,phil-r/chaos,chaosbot/Chaos,phil-r/chaos,amoffat/Chaos,eamanu/Chaos,Chaosthebot/Chaos,botchaos/Chaos,amoffat/Chaos,eamanu/Chaos,Chaosthebot/Chaos,hongaar/chaos,eukaryote31/chaos,mark-i-m/Chaos