update

product/app/en-us/_sidebar.md

@@ -11,4 +11,4 @@
    * [SLAM](SlamMode.md)
      * [Tips](SlamModeNote.md)
    * [APP FAQ](AppQA.md)
-   * [4DKanKan Camera User Manual](UserManual.md)
+   * [User Manual](UserManual.md)