fix typo.
diff --git a/src/main/java/org/apache/datasketches/memory/Buffer.java b/src/main/java/org/apache/datasketches/memory/Buffer.java
index ce16bd1..6877057 100644
--- a/src/main/java/org/apache/datasketches/memory/Buffer.java
+++ b/src/main/java/org/apache/datasketches/memory/Buffer.java
@@ -152,7 +152,7 @@
* @param offsetBytes the starting offset with respect to the origin of this <i>WritableBuffer</i>
* @param capacityBytes the <i>capacity</i> of the returned region in bytes
* @param byteOrder the given byte order
- * @return a new <i>WritableBuffer</i> representing the defined writable region
+ * @return a new <i>Buffer</i> representing the defined writable region
* based on the current <i>position</i>, <i>end</i> and byteOrder.
*/
public abstract Buffer region(long offsetBytes, long capacityBytes,
