HADOOP-14635. Javadoc correction for AccessControlList#buildACL. Contributed by Yeliang Cang.

(cherry picked from commit ab645b3caa0313f08a26bdd70fa14434d09e6cb5)

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/authorize/AccessControlList.java

@@ -97,10 +97,10 @@ public class AccessControlList implements Writable {
   }
 
   /**
-   * Build ACL from the given two Strings.
-   * The Strings contain comma separated values.
+   * Build ACL from the given array of strings.
+   * The strings contain comma separated values.
    *
-   * @param aclString build ACL from array of Strings
+   * @param userGroupStrings build ACL from array of Strings
    */
   private void buildACL(String[] userGroupStrings) {
     users = new HashSet<String>();