chore: rename example worflows from test to example (#1878)

.github/workflows/matrix-example.yml

@@ -0,0 +1,46 @@
+name: Matrix Example
+
+permissions:
+   contents: read
+
+on:
+  workflow_dispatch:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  changed-files:
+    name: Get changed files
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.changed-files.outputs.all_changed_files }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Get changed files
+        id: changed-files
+        uses: ./
+        with:
+          json: true
+          escape_json: false
+      - name: List all changed files
+        run: echo '${{ steps.changed-files.outputs.all_changed_files }}'
+
+  matrix-job:
+    name: Run Matrix Job
+    runs-on: ubuntu-latest
+    needs: [changed-files]
+    strategy:
+      matrix: 
+        files: ${{ fromJSON(needs.changed-files.outputs.matrix) }}
+      max-parallel: 4
+      fail-fast: false
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Test
+        run: |
+          echo ${{ matrix.files }}