build: use tokusumi/markdown-embed-code@main action to synchronize Markdown files and example code

Signed-off-by: Esteve Fernandez <esteve@apache.org>

Author: esteve

.github/workflows/rust-minimal.yml

@@ -36,6 +36,17 @@ jobs:
       image: ${{ matrix.docker_image }}
     steps:
     - uses: actions/checkout@v4
+      with:
+       persist-credentials: false # otherwise, the token used is the GITHUB_TOKEN, instead of your personal token
+       fetch-depth: 0 # otherwise, you will failed to push refs to dest repo
+       ref: refs/heads/${{ github.head_ref }}
+
+    - uses: tokusumi/markdown-embed-code@main
+      with:
+        markdown: "docs/writing-your-first-rclrs-node.md"
+        token: ${{ secrets.GITHUB_TOKEN }}
+        message: "synchronizing Markdown files"
+        silent: true
 
     - name: Search packages in this repository
       id: list_packages

.github/workflows/rust-stable.yml

@@ -36,6 +36,17 @@ jobs:
       image: ${{ matrix.docker_image }}
     steps:
     - uses: actions/checkout@v4
+      with:
+       persist-credentials: false # otherwise, the token used is the GITHUB_TOKEN, instead of your personal token
+       fetch-depth: 0 # otherwise, you will failed to push refs to dest repo
+       ref: refs/heads/${{ github.head_ref }}
+
+    - uses: tokusumi/markdown-embed-code@main
+      with:
+        markdown: "docs/writing-your-first-rclrs-node.md"
+        token: ${{ secrets.GITHUB_TOKEN }}
+        message: "synchronizing Markdown files"
+        silent: true
 
     - name: Search packages in this repository
       id: list_packages