fix code issues

README.md

cmd/mytoken-server/mytoken-setup/setup.go

internal/db/cluster/cluster.go

internal/db/dbrepo/authcodeinforepo/authcodeInfo.go

internal/endpoints/redirect/redirectEndpoint.go

internal/endpoints/revocation/revocationEndpoint.go

internal/jws/jws.go

internal/oidc/authcode/authcode.go

internal/oidc/refresh/refresh.go

internal/utils/logger/logger.go

internal/utils/singleasciiencode/singleasciiencode.go

pkg/mytokenlib/accesstoken.go

pkg/mytokenlib/supertoken.go

shared/supertoken/capabilities/capability.go

shared/supertoken/superTokenHandler.go

shared/utils/utils.go