fixup markdown issue in README

Author: steffyP

README.md

@@ -119,7 +119,7 @@ with:
 | `skip-ephemeral-stop`        | Skip stopping LocalStack Ephemeral Instance | `false`  |
 | `skip-startup`     | Explicitly prevent LocalStack start up, only installs CLI(s). Recommended to manage state later on in the pipeline or start up an ephemeral instance. | `false`  |
 | `skip-wait`        | Skip waiting for LocalStack to start up | `false`  |
-| `state-action`     | Valid values are `load`, `save`, `start`, `stop`, `` (empty, don't manage state). Values `start`/`stop` only usable with app previews.  | `` |
+| `state-action`     | Valid values are `load`, `save`, `start`, `stop`, `''` (empty, don't manage state). Values `start`/`stop` only usable with app previews.  | `''` |
 | `state-backend`    | Either store the state of LocalStack locally, as a Cloud Pod or start an Ephemeral Instance. Valid values are `cloud-pods`, `ephemeral` or `local`. Use this option in unison with `state-action` to control behaviour. | `cloud-pods`  |
 | `state-name`       | Name of the state artifact (without extension) | `false`  |
 | `use-pro`          | Whether to use the Pro version of LocalStack (requires Auth Token to be configured) | `false`  |