docs: fix badge image protocol
docs: fix badge image protocol

RoseTHERESA/connect,tanveer12332/connect,khirayama/connect,llwanghong/connect,mi2oon/connect,senchalabs/connect,lian774739140/connect,wghust/connect,behind2/connect,mi2oon/connect,gtomitsuka/connect,chinazhaghai/connect,qitianchan/connect,austincitylimits/connect,keenwon/connect,khalerc/connect,RickyDan/connect,liuwei9413/connect,dkfiresky/connect