add newline to end of file

Author: NorskNoobing

.github/workflows/update-dockerhub-readme.yaml

@@ -17,4 +17,4 @@ jobs:
           password: ${{ secrets.DOCKERHUB_TOKEN }}
           repository: ${{ github.repository }}
           readme-filepath: ./README.md
-          short-description: ${{ github.event.repository.description }}
+          short-description: ${{ github.event.repository.description }}