HOTFIX: ListShareGroupOffsetResult javadoc (apache#18642)

Signed-off-by: PoAn Yang <payang@apache.org>
Reviewers: Andrew Schofield <aschofield@confluent.io>

clients/src/main/java/org/apache/kafka/clients/admin/ListShareGroupOffsetsResult.java

@@ -45,7 +45,7 @@ public class ListShareGroupOffsetsResult {
     /**
      * Return the future when the requests for all groups succeed.
      *
-     * @return - Future which yields all Map<String, Map<TopicPartition, Long> objects, if requests for all the groups succeed.
+     * @return - Future which yields all Map&lt;String, Map&lt;TopicPartition, Long&gt;&gt; objects, if requests for all the groups succeed.
      */
     public KafkaFuture<Map<String, Map<TopicPartition, Long>>> all() {
         return KafkaFuture.allOf(futures.values().toArray(new KafkaFuture[0])).thenApply(
@@ -65,7 +65,7 @@ public KafkaFuture<Map<String, Map<TopicPartition, Long>>> all() {
     }
 
     /**
-     * @param groupId - The groupId for which the Map<TopicPartition, Long> is needed
+     * @param groupId - The groupId for which the Map&lt;TopicPartition, Long&gt; is needed
      * @return - Future which yields a map of topic partitions to offsets for the specified group.
      */
     public KafkaFuture<Map<TopicPartition, Long>> partitionsToOffset(String groupId) {