chore: add more information for javadocs (#3989)

bindings/java/pom.xml

@@ -34,9 +34,9 @@
     <artifactId>opendal-java</artifactId>
     <version>0.44.1</version>
 
-    <name>Apache OpenDAL</name>
+    <name>Apache OpenDAL™</name>
     <description>
-        OpenDAL is a data access layer that allows users to
+        Apache OpenDAL™ is a data access layer that allows users to
         easily and efficiently retrieve data from various storage services in a unified way.
     </description>
 

bindings/java/src/main/java/org/apache/opendal/layer/package-info.java

@@ -0,0 +1,23 @@
+/*
+ * 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.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+/**
+ * Wrappers to configure the underneath layers.
+ */
+package org.apache.opendal.layer;

bindings/java/src/main/java/org/apache/opendal/package-info.java

@@ -18,7 +18,6 @@
  */
 
 /**
- * This package contains Java bindings over <a href="https://opendal.apache.org/">OpenDAL</a>
- * via Java Native Interface (JNI).
+ * JNI-based Java binding for <a href="https://opendal.apache.org/">Apache OpenDAL™</a>.
  */
 package org.apache.opendal;