completion/zsh: Allow multiple volumes of 'volume rm'

It is possible to give more than one volume for `docker volume rm`.

Signed-off-by: Jörg Sommer <[email protected]>

Author: jo-so

contrib/completion/zsh/_docker

@@ -2533,7 +2533,7 @@ __docker_volume_subcommand() {
             _arguments $(__docker_arguments) \
                 $opts_help \
                 "($help -f --force)"{-f,--force}"[Force the removal of one or more volumes]" \
-                "($help -):volume:__docker_complete_volumes" && ret=0
+                "($help -)*:volumes:__docker_complete_volumes" && ret=0
             ;;
         (help)
             _arguments $(__docker_arguments) ":subcommand:__docker_volume_commands" && ret=0