docs: fix Ti.UI.TableView.setData argument

Author: drauggres

apidoc/Titanium/UI/TableView.yml

@@ -1009,6 +1009,7 @@ methods:
  - name: animation
 summary: Animation properties. (iOS only.)
 type: TableViewAnimationProperties
+optional: true
 
  - name: setHeaderPullView
 summary: Sets the value of the [Titanium.UI.TableView.headerPullView] property.