Fixed missing blank line

Author: labbati

dd-java-agent/testing/src/main/groovy/datadog/trace/agent/test/AgentTestRunner.java

@@ -85,6 +85,7 @@ public abstract class AgentTestRunner extends Specification {
     ((Logger) LoggerFactory.getLogger("datadog")).setLevel(Level.DEBUG);
 
     ConfigUtils.makeConfigInstanceModifiable();
+
     TEST_WRITER =
         new ListWriter() {
           @Override