test: doc fix

.github/workflows/build-image.yml

@@ -1,11 +1,11 @@
 name: django-slack
-run-name: Build a new django-slack examples image.
+run-name: Verify the latest django-slack examples image.
 on: [push]
 jobs:
   build-image:
     runs-on: ubuntu-latest
     steps:
-      - name: Build Docker image to verify, don't push.
+      - name: Verify Docker image build
         uses: docker/build-push-action@v6
         with:
           push: false