修改Demo场景

Assets/Scenes/LangChaoDemo.unity

@@ -6946,6 +6946,7 @@ MonoBehaviour:
   m_Name: 
   m_EditorClassIdentifier: 
   global: 1
+  editorBtnCanvas: {fileID: 0}
   EditorCanvas: {fileID: 0}
   line: {fileID: 972488011}
   list: {fileID: 231366807}