Change markdown linter github action to a more updated one

Signed-off-by: Guillaume de Rouville <guillaume.derouville@gmail.com>

.github/workflows/ci.yml

@@ -41,10 +41,10 @@ jobs:
           make shellcheck cuelint check-buildkit-version docslint
 
       - name: Markdown Lint
-        uses: nosborn/github-action-markdown-cli@v1.1.1
+        uses: avto-dev/markdown-lint@v1
         with:
-          files: ./docs README.md
-          config_file: ".markdownlint.yaml"
+          config: ".markdownlint.yaml"
+          args: ./docs README.md
 
   test:
     name: Test

docs/user/user.md

@@ -102,6 +102,6 @@ The plan defines one or several `outputs`. They can show useful information at t
 dagger output list
 ```
 
-## What's next
+## What's next?
 
 At this point, you have deployed your first application using dagger and learned some dagger commands. You are now ready to [learn more about how to program dagger](/programming).