Add markdown linting

.github/workflows/lint.yml

@@ -19,6 +19,13 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: reviewdog/action-actionlint@v1
+  markdownlint:
+    name: markdown
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v4
+      - name: Run markdownlint
+        uses: DavidAnson/markdownlint-cli2-action@v16
   yamllint:
     name: Yamllint
     runs-on: ubuntu-22.04

README.md

@@ -1,24 +1,29 @@
 # action-platformsh-url
 
-Detecting if PlatformSH is building an environment, and returning the URL when it's done deploying.
+Detecting if PlatformSH is building an environment, and returning the
+URL when it's done deploying.
 
 ## Inputs
 
 - `PLATFORMSH_ID`: The ID of your platform project.
 - `PLATFORMSH_KEY`: The API token, generated through PlatformSH.
-	- Login to [console.platform.sh](https://console.platform.sh)
-	- "My Profile" > "API Tokens" > "Create API token"
-	- Remember that this is an access token, and **should not be written in plain text.**
-	- Add it as an encrypted repo secret - [more info at GitHub docs](https://docs.github.com/en/actions/security-guides/encrypted-secrets#creating-encrypted-secrets-for-a-repository).
+  - Login to [console.platform.sh](https://console.platform.sh)
+  - "My Profile" > "API Tokens" > "Create API token"
+  - Remember that this is an access token, and **should not be written
+    in plain text.**
+  - Add it as an encrypted repo secret - [more info at GitHub
+    docs](https://docs.github.com/en/actions/security-guides/encrypted-secrets#creating-encrypted-secrets-for-a-repository).
 - `ENVIRONMENT_NAME` (optional): The environment, to check for
-	- By default, this is set to the `pr-xx`, using `pr-${{ github.event.pull_request.number }}`
-	- You can also set it to check for the current branch, using `${{ github.head_ref || github.ref_name }}`
+  - By default, this is set to the `pr-xx`, using `pr-${{
+    github.event.pull_request.number }}`
+  - You can also set it to check for the current branch, using `${{
+    github.head_ref || github.ref_name }}`
 
 See the other inputs in [action.yml](action.yml)
 
 ## See also
 
-This action is used for another action, for detecting if a platformsh environment has deployed correctly.
-
-https://github.com/rasben/action-platformsh-deploy-status
+This action is used for another action, for detecting if a platformsh
+environment has deployed correctly.
 
+<https://github.com/rasben/action-platformsh-deploy-status>