feat: use stefanzweifel/git-auto-commit-action@v5 to commit

.github/workflows/doc_sync.yml

@@ -2,11 +2,7 @@
 # Succeeds if it is.
 # Fail if not, generates a new version then commits it. 
 
-name: Docs synchronization
-
-permissions:
-    contents: write
-    pull-requests: write
+name: Docs synchronizer
 
 on:
   pull_request:
@@ -17,14 +13,21 @@ jobs:
   docs-synch:
     name: Auto-updates docs on pull requests when needed
     runs-on: ubuntu-latest
+    permissions:
+      # Give the default GITHUB_TOKEN write permission to commit and push the changed files back to the repository.
+      contents: write
+
     steps:
       - uses: actions/checkout@v4
+        with:
+          ref: ${{ github.head_ref }}
+
       - uses: actions/setup-go@v4
         with:
             go-version: '1.21'
-
       - name: Get dependencies
         run: go mod download
+
       - name: Install tfplugindocs
         run: go install github.com/hashicorp/terraform-plugin-docs/cmd/tfplugindocs
       - name: Run tfplugindocs
@@ -44,7 +47,9 @@ jobs:
       - name: Commit docs update
         if: |
           failure()
-        run: |
-          git config user.name "Github Actions docs synchronizer Bot"
-          git config user.email "actions@github.com"
-          echo "test commit docs update"
+        uses: stefanzweifel/git-auto-commit-action@v5
+        with:
+          commit_message: auto-update documentations
+          file_pattern: 'docs/'
+          commit_user_name: Docs synchronizer Bot
+          commit_user_email: git-auto-commit-action@gusers.noreply.github.com

pkg/resources/cellar/bucket/doc.md

@@ -1,3 +1,3 @@
 Manage [Cellar Bucket](https://www.clever-cloud.com/doc/deploy/addon/cellar/) product.
 
-See [product tests specification](https://www.clever-cloud.com/doc/deploy/addon/cellar/).
+See [product specification](https://www.clever-cloud.com/doc/deploy/addon/cellar/).