docs: fix error in example (YAML) for TCP middleware whitelist
docs: fix error in example (YAML) for TCP middleware whitelist



ldez/traefik,vdemeester/traefik,vdemeester/traefik,FriggaHel/traefik,mmatur/traefik,FriggaHel/traefik,mmatur/traefik,ldez/traefik,vdemeester/traefik,ldez/traefik,FriggaHel/traefik,vdemeester/traefik,mmatur/traefik,mmatur/traefik,ldez/traefik,FriggaHel/traefik