docs(gha): move the `steps` key from the top level into the `build` job key

Indent the `steps` key two levels to move it from the top level
into the `build` job key, since it should be `jobs.build.steps` as specified
in [Workflow syntax for GitHub Actions](https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idsteps)

content/scout/integrations/ci/gha.md

@@ -54,51 +54,51 @@ jobs:
     permissions:
       pull-requests: write
 
-steps:
-  - name: Checkout repository
-    uses: actions/checkout@v4
-    with:
-      ref: ${{ env.SHA }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ env.SHA }}
 
-  - name: Setup Docker buildx
-    uses: docker/setup-buildx-action@v3
+      - name: Setup Docker buildx
+        uses: docker/setup-buildx-action@v3
 
-  # Authenticate to the container registry
-  - name: Authenticate to registry ${{ env.REGISTRY }}
-    uses: docker/login-action@v3
-    with:
-      registry: ${{ env.REGISTRY }}
-      username: ${{ secrets.REGISTRY_USER }}
-      password: ${{ secrets.REGISTRY_TOKEN }}
+      # Authenticate to the container registry
+      - name: Authenticate to registry ${{ env.REGISTRY }}
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ secrets.REGISTRY_USER }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
 
-  # Extract metadata (tags, labels) for Docker
-  - name: Extract Docker metadata
-    id: meta
-    uses: docker/metadata-action@v5
-    with:
-      images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
-      labels: |
-        org.opencontainers.image.revision=${{ env.SHA }}
-      tags: |
-        type=edge,branch=$repo.default_branch
-        type=semver,pattern=v{{version}}
-        type=sha,prefix=,suffix=,format=short
+      # Extract metadata (tags, labels) for Docker
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          labels: |
+            org.opencontainers.image.revision=${{ env.SHA }}
+          tags: |
+            type=edge,branch=$repo.default_branch
+            type=semver,pattern=v{{version}}
+            type=sha,prefix=,suffix=,format=short
 
-  # Build and push Docker image with Buildx
-  # (don't push on PR, load instead)
-  - name: Build and push Docker image
-    id: build-and-push
-    uses: docker/build-push-action@v5
-    with:
-      context: .
-      sbom: ${{ github.event_name != 'pull_request' }}
-      provenance: ${{ github.event_name != 'pull_request' }}
-      push: ${{ github.event_name != 'pull_request' }}
-      load: ${{ github.event_name == 'pull_request' }}
-      tags: ${{ steps.meta.outputs.tags }}
-      labels: ${{ steps.meta.outputs.labels }}
-      cache-from: type=gha
-      cache-to: type=gha,mode=max
+      # Build and push Docker image with Buildx
+      # (don't push on PR, load instead)
+      - name: Build and push Docker image
+        id: build-and-push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          sbom: ${{ github.event_name != 'pull_request' }}
+          provenance: ${{ github.event_name != 'pull_request' }}
+          push: ${{ github.event_name != 'pull_request' }}
+          load: ${{ github.event_name == 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
 ```
 
 This creates workflow steps to: