README typo fix
README typo fix

policygenius/seal,nLight/seal,stig/seal,bitzesty/seal,nLight/seal,christophwong/seal,christophwong/seal,bitzesty/seal,binaryberry/seal,livestax/seal,Automattic/seal,policygenius/seal,livestax/seal,envato/seal,stig/seal,benlovell/seal,binaryberry/seal