fix artifacts syntax

Author: isc30

.github/workflows/build-all.yml

@@ -30,7 +30,7 @@ jobs:
       run: dotnet pack -c Release BlazorLazyLoading.sln
 
     - name: Upload artifacts
-    - uses: actions/upload-artifact@v1
+      uses: actions/upload-artifact@v1
       with:
         name: output
         path: output