HDFS-16608. Fix the link in TestClientProtocolForPipelineRecovery (#4379)

Signed-off-by: Akira Ajisaka <aajisaka@apache.org>

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestClientProtocolForPipelineRecovery.java

@@ -448,7 +448,7 @@ public class TestClientProtocolForPipelineRecovery {
    *  rolling upgrades. The client should be able to retry pipeline recovery
    *  more times than the default.
    *  (in a row for the same packet, including the heartbeat packet)
-   *  (See{@link DataStreamer#pipelineRecoveryCount})
+   *  (See{@link DataStreamer#getPipelineRecoveryCount})
    */
   @Test(timeout = 60000)
   public void testPipelineRecoveryOnDatanodeUpgrade() throws Exception {