Ensure Vale lefthook rule returns error codes when necessary

doc/install/index.md

@@ -27,7 +27,7 @@ install GitLab:
 
 | Installation method                                            | Description | When to choose |
 |----------------------------------------------------------------|-------------|----------------|
-| [Linux package](https://docs.gitlab.com/omnibus/installation/) | The official deb/rpm packages (also known as Omnibus GitLab) that contains a bundle of GitLab and the components it depends on, including PostgreSQL, Redis, and Sidekiq. | This is the recommended method for getting started. The Linux packages are mature, scalable, and are used today on GitLab.com. If you need additional flexibility and resilience, we recommend deploying GitLab as described in the [reference architecture documentation](../administration/reference_architectures/index.md). |
+| [Linux package](https://docs.gitlab.com/omnibus/installation/) | The official deb/rpm packages (also known as Omnibus GitLab) that contains a bundle of GitLab and the components it depends on, including PostgreSQL, Redis, and Sidekiq. | This method is recommended for getting started. The Linux packages are mature, scalable, and are used today on GitLab.com. If you need additional flexibility and resilience, we recommend deploying GitLab as described in the [reference architecture documentation](../administration/reference_architectures/index.md). |
 | [Helm charts](https://docs.gitlab.com/charts/)                 | The cloud native Helm chart for installing GitLab and all of its components on Kubernetes. | When installing GitLab on Kubernetes, there are some trade-offs that you need to be aware of: <br/>- Administration and troubleshooting requires Kubernetes knowledge.<br/>- It can be more expensive for smaller installations. The default installation requires more resources than a single node Linux package deployment, as most services are deployed in a redundant fashion.<br/><br/> Use this method if your infrastructure is built on Kubernetes and you're familiar with how it works. The methods for management, observability, and some concepts are different than traditional deployments. |
 | [Docker](https://docs.gitlab.com/omnibus/docker/)              | The GitLab packages, Dockerized. | Use this method if you're familiar with Docker. |
 | [Source](installation.md)                                      | Install GitLab and all of its components from scratch. | Use this method if none of the previous methods are available for your platform. Useful for unsupported systems like \*BSD.|

lefthook.yml

@@ -42,7 +42,7 @@ pre-push:
       tags: documentation style
       files: git diff --name-only --diff-filter=d $(git merge-base origin/master HEAD)..HEAD
       glob: 'doc/*.md'
-      run: 'if command -v vale > /dev/null 2>&1; then if ! vale --config .vale.ini --minAlertLevel error {files}; then echo "ERROR: Fix any linting errors and make sure you are using the latest version of Vale."; fi; else echo "ERROR: Vale not found. For more information, see https://docs.errata.ai/vale/install."; fi'
+      run: 'if command -v vale > /dev/null 2>&1; then if ! vale --config .vale.ini --minAlertLevel error {files}; then echo "ERROR: Fix any linting errors and make sure you are using the latest version of Vale."; exit 1; fi; else echo "ERROR: Vale not found. For more information, see https://docs.errata.ai/vale/install."; exit 1; fi'
     gettext:
       skip: true  # This is disabled by default. You can enable this check by adding skip: false in lefhook-local.yml https://github.com/evilmartians/lefthook/blob/master/docs/full_guide.md#skipping-commands
       tags: backend frontend view haml