[ISSUE #11011] Fix misplaced license header in ConfigManagerTest (#11012)

Move the ASF license comment to the top of the file, before the
package statement. It was squeezed onto the same line as the package
declaration (introduced by b6ff649291), which breaks the conventional
header placement used across the codebase.

common/src/test/java/org/apache/rocketmq/common/ConfigManagerTest.java

diff --git a/common/src/test/java/org/apache/rocketmq/common/ConfigManagerTest.java b/common/src/test/java/org/apache/rocketmq/common/ConfigManagerTest.java
index a61ec4c..1fdb961 100644
--- a/common/src/test/java/org/apache/rocketmq/common/ConfigManagerTest.java
+++ b/common/src/test/java/org/apache/rocketmq/common/ConfigManagerTest.java
@@ -1,4 +1,4 @@
-package org.apache.rocketmq.common;/*
+/*
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.
@@ -14,6 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+package org.apache.rocketmq.common;
 
 import java.io.File;
 import java.io.PrintWriter;