BLOG-34 Fix deployment workflow syntax error (#35)

### Description

As the title.

### Package Changes

_No response_

### Screenshots

_No response_

### Reference

- Resolves #34
- [GitHub Action - Docker Build And Push](https://github.com/marketplace/actions/build-and-push-docker-images#customizing)

### Checklist

- [x] A milestone is set
- [x] The related issuse has been linked to this branch

Reviewed-on: #35
Reviewed-by: zoe <zoe@noreply.localhost>
Co-authored-by: SquidSpirit <squid@squidspirit.com>
Co-committed-by: SquidSpirit <squid@squidspirit.com>

.gitea/workflows/deployment.yaml

@@ -29,6 +29,6 @@ jobs:
         with:
           push: true
           context: ./frontend
-          tags:
-            - ${{ vars.REGISTRY }}/${{ vars.IMAGE_REPO_FRONTEND }}:latest
-            - ${{ vars.REGISTRY }}/${{ vars.IMAGE_REPO_FRONTEND }}:${{ gitea.event.release.tag_name }}
+          tags: |
+            ${{ vars.REGISTRY }}/${{ vars.IMAGE_REPO_FRONTEND }}:latest
+            ${{ vars.REGISTRY }}/${{ vars.IMAGE_REPO_FRONTEND }}:${{ gitea.event.release.tag_name }}