Chore: Check markdown links on documentation

Author: loic425

.github/workflows/check_markdown_links.yaml

@@ -0,0 +1,15 @@
+name: Check Markdown links
+
+on:
+    pull_request: ~
+    workflow_dispatch: ~
+    workflow_call: ~
+
+jobs:
+    markdown-link-check:
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v6
+            -   uses: tcort/github-action-markdown-link-check@v1
+                with: 
+                    folder-path: 'docs'

.github/workflows/ci.yaml

@@ -28,7 +28,7 @@ jobs:
             DATABASE_URL: "pgsql://postgres:postgres@127.0.0.1/sylius_stack?charset=utf8&serverVersion=${{ matrix.postgres }}"
         steps:
             -   name: "Checkout"
-                uses: actions/checkout@v3
+                uses: actions/checkout@v6
 
             -   name: "Setup PHP"
                 uses: shivammathur/setup-php@v2

.github/workflows/split_packages.yaml

@@ -28,7 +28,7 @@ jobs:
                     - { name: 'TwigHooks' }
                     - { name: 'UiTranslations' }
         steps:
-            -   uses: actions/checkout@v3
+            -   uses: actions/checkout@v6
                 with:
                     fetch-depth: 0