docs: normalise table headers

README.md

@@ -17,7 +17,7 @@ include:
 
 The Renovate template uses some global configuration used throughout all jobs.
 
-| Name                   | description                                                                     | default value     |
+| Name                   | Description                                                                     | Default value     |
 |------------------------|---------------------------------------------------------------------------------|-------------------|
 | `RENOVATE_IMAGE`       | The Docker image used to run Renovate                                           | `registry.hub.docker.com/renovate/renovate:latest` |
 | :lock: `RENOVATE_TOKEN`| A GitLab access token to allow Renovate crawl your projects. [See doc](https://docs.renovatebot.com/modules/platform/gitlab/#authentication) | _none_ |