Try to run java as a service and not wait

Author: phpfui

.github/workflows/tests.yml

@@ -44,7 +44,7 @@ jobs:
         run: unzip vnu.jar_20.6.30.zip
 
       - name: Run Nu Html Checker (v.Nu)
-        run: java -cp ./dist/vnu.jar -Xss1024k -Dnu.validator.servlet.bind-address=127.0.0.1 nu.validator.servlet.Main 8888
+        run: java -cp ./dist/vnu.jar -Xss1024k -Dnu.validator.servlet.bind-address=127.0.0.1 nu.validator.servlet.Main 8888 &
 
       - name: Install dependencies
         run: composer update --${{ matrix.dependency-version }} --prefer-dist --no-interaction