add missing parenthesis to getClientOffset indicating that this is…

… a method

docs/03 Monitoring State/DropTargetMonitor.md

@@ -23,8 +23,8 @@ DropTargetMonitor
 
 * **`getInitialSourceClientOffset()`**: Returns the `{ x, y }` client offset of the drag source component's root DOM node at the time when the current drag operation has started. Returns `null` if no item is being dragged.
 
-* **`getClientOffset`**: Returns the last recorded `{ x, y }` client offset of the pointer while a drag operation is in progress. Returns `null` if no item is being dragged.
+* **`getClientOffset()`**: Returns the last recorded `{ x, y }` client offset of the pointer while a drag operation is in progress. Returns `null` if no item is being dragged.
 
 * **`getDifferenceFromInitialOffset()`**: Returns the `{ x, y }` difference between the last recorded client offset of the pointer and the client offset when current the drag operation has started. Returns `null` if no item is being dragged.
 
-* **`getSourceClientOffset()`**: Returns the projected `{ x, y }` client offset of the drag source component's root DOM node, based on its position at the time when the current drag operation has started, and the movement difference. Returns `null` if no item is being dragged.
+* **`getSourceClientOffset()`**: Returns the projected `{ x, y }` client offset of the drag source component's root DOM node, based on its position at the time when the current drag operation has started, and the movement difference. Returns `null` if no item is being dragged.