fix

Author: Heng Qin

api/src/main/java/com/datastrato/gravitino/authorization/Privilege.java

@@ -71,7 +71,7 @@ enum Name {
     MANAGE_USER(1L << 22),
     /** The privilege to manage groups, including add,remove and get a group. */
     MANAGE_GROUP(1L << 23),
-    /** The privilege to manage roles, including create,drop and get a role. */
+    /** The privilege to manage roles, including create,delete and get a role. */
     MANAGE_ROLE(1L << 24),
     /** The privilege to grant a role to users or groups. */
     GRANT_ROLE(1L << 25),