doc: fix typo error on README.md [skip ci]

README.md

@@ -418,7 +418,7 @@ This job pushes (_promotes_) the built image as the _release_ image [skopeo](htt
 | `DOCKER_SKOPEO_IMAGE` | The Docker image used to run [skopeo](https://github.com/containers/skopeo) | `quay.io/skopeo/stable:latest` |
 | `DOCKER_PUBLISH_ARGS` | Additional [`skopeo copy` arguments](https://github.com/containers/skopeo/blob/master/docs/skopeo-copy.1.md#options) | _(none)_          |
 | `AUTODEPLOY_TO_PROD`  | Set to enable automatic publish (and deploy) on `master` branch             | _none_ (enabled)  |
-| `PUBLISH_ON_PROD`     | Determines whether this job is enabled on `master` branch                   | `true`_ (enabled)  |
+| `PUBLISH_ON_PROD`     | Determines whether this job is enabled on `master` branch                   | `true` (enabled)  |
 | `DOCKER_SEMREL_RELEASE_DISABLED` | Set to `true` to disable [semantic-release integration](#semantic-release-integration)   | _none_ (enabled) |
 
 This job produces _output variables_ that are propagated to downstream jobs (using [dotenv artifacts](https://docs.gitlab.com/ee/ci/pipelines/job_artifacts.html#artifactsreportsdotenv)):