fix typo of file name (camera_mosue_drag.html)

Author: osaboh

samples/camera_mosue_drag.html samples/camera_mouse_drag.htmlsamples/camera_mosue_drag.html renamed to samples/camera_mouse_drag.html

@@ -10,7 +10,7 @@
       const list = [
         //      'camera_basic.html',
         //      'camera_basic_earth.html',
-        //      'camera_mosue_drag.html',
+        //      'camera_mouse_drag.html',
         //      'camera_mouse_x.html',
         //      'camera_orbitcontrols.html',
         //      'camera_orbitcontrols_basic.html',