ci: fix OCI labels

Author: BoxBoxJason

.github/workflows/release.yml

@@ -101,14 +101,14 @@ jobs:
           build-args: |
             VERSION=${{ github.ref_name }}
           labels: |
-            org.opencontainers.image.title "${{ github.event.repository.name }}"
-            org.opencontainers.image.description "${{ github.event.repository.description }}"
-            org.opencontainers.image.source "${{ github.event.repository.html_url }}"
-            org.opencontainers.image.url "ghcr.io/boxboxjason/gitlab-sync"
-            org.opencontainers.image.created "${{ github.event }}"
-            org.opencontainers.image.revision "${{ github.sha }}"
-            org.opencontainers.image.version "${{ github.ref_name }}"
-            org.opencontainers.image.vendor "${{ github.repository_owner}}"
+            org.opencontainers.image.title="${{ github.event.repository.name }}"
+            org.opencontainers.image.description="${{ github.event.repository.description }}"
+            org.opencontainers.image.source="${{ github.event.repository.html_url }}"
+            org.opencontainers.image.url="ghcr.io/boxboxjason/gitlab-sync"
+            org.opencontainers.image.created="${{ github.event }}"
+            org.opencontainers.image.revision="${{ github.sha }}"
+            org.opencontainers.image.version="${{ github.ref_name }}"
+            org.opencontainers.image.vendor="${{ github.repository_owner}}"
           tags: |
             ghcr.io/${{ env.REPO_NAME }}:${{ github.ref_name }}
             ghcr.io/${{ env.REPO_NAME }}:${{ env.MAJOR }}.${{ env.MINOR }}