outdated dragging API mentioned in demo text

Looks like you changed the API on dragging, but did not update the description text for it. 
https://github.com/ocornut/imgui/issues/167

imgui_demo.cpp

@@ -1542,7 +1542,7 @@ void ImGui::ShowTestWindow(bool* p_open)
 
         if (ImGui::TreeNode("Dragging"))
         {
-            ImGui::TextWrapped("You can use ImGui::GetItemActiveDragDelta() to query for the dragged amount on any widget.");
+            ImGui::TextWrapped("You can use ImGui::GetMouseDragDelta(0) to query for the dragged amount on any widget.");
             ImGui::Button("Drag Me");
             if (ImGui::IsItemActive())
             {