fix volume ls filter driver
@@ -76,9 +76,9 @@ local rosemary
### driver
-The `driver` filter matches on all or part of a volume's driver name.
+The `driver` filter matches volumes based on their driver.
-The following filter matches all volumes with a driver name containing the `local` string.
+The following example matches volumes that are created with the `local` driver:
```bash
$ docker volume ls -f driver=local
