Update bash completion `dns-options-add/rm` -> `dns-option-add/rm`
In 28186, `dns-options-add/rm` has been changed to `dns-option-add/rm`
in `docker service create/update`, for the purpose of consistency.
This fix updates bash completion to remove extra `s`.
@@ -2679,8 +2679,8 @@ _docker_service_update() {
--container-label-add
--container-label-rm
--dns-add
- --dns-options-add
- --dns-options-rm
+ --dns-option-add
+ --dns-option-rm
--dns-rm
--dns-search-add
--dns-search-rm
