Merge pull request #865 from Spartan322/4.3-fix/unhandled-picking-docs

[4.3] Correct `Node._unhandled_picking_input` to refer to InputEvent

doc/classes/Node.xml

@@ -136,7 +136,7 @@
 			<return type="void" />
 			<param index="0" name="event" type="InputEvent" />
 			<description>
-				Called when an [InputEventKey] hasn't been consumed by physics picking. The input event propagates up through the node tree in the current [Viewport] until a node consumes it.
+				Called when an [InputEvent] hasn't been consumed by physics picking. The input event propagates up through the node tree in the current [Viewport] until a node consumes it.
 				It is only called if unhandled picking input processing is enabled, which is done automatically if this method is overridden, and can be toggled with [method set_process_unhandled_picking_input].
 				To consume the input event and stop it propagating further to other nodes, [method Viewport.set_input_as_handled] can be called.
 				This method can be used to handle mouse and touch events that were not set to handled during physics picking.