Update build.yml

Author: Mqxx

.github/workflows/build.yml

@@ -23,8 +23,8 @@ jobs:
       - name: Install dependencies
         run: npm ci
 
-      - name: Build extension
-        run: npm run build
+      - name: Build VSIX extension package
+        run: npm run package
 
       - name: Upload VSIX artifact
         uses: actions/upload-artifact@v4