docs: shorten usage example in README.md

README.md

@@ -60,18 +60,11 @@ jobs:
           tags: registry.example.com/my-app:git-${{ github.sha }}
 
       - name: Compare Vulnerabilities (Head vs Target)
-        uses: Philipp/cve-differential@main
+        uses: https://git.horstenkamp.eu/Philipp/cve-differential@main
         with:
           head-image: registry.example.com/my-app:git-${{ github.sha }}
           target-image: registry.example.com/my-app:latest
           target-branch: ${{ github.base_ref || 'main' }}
-
-      - name: Publish CVE Delta to Job Summary
-        if: always()
-        run: |
-          if [ -f cve-delta.md ]; then
-            cat cve-delta.md >> "$GITHUB_STEP_SUMMARY"
-          fi
 ```
 
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