Update 4 5 isosurface

4-5-isosurface.md

@@ -41,7 +41,7 @@ In _3D Slices_ visualization style, you can change the location of the slices al
  1. Click the _Globe_ button to change from _Globe_ to _Map_ mode (since it's more convenient to control), 
  2. Double-click one of the corners of the slices, in order to reveal the handles of the slice, 
  3. Drag the handle of the slice,
- 4. You may want to go back to _Globe_ mode. (_Globe_ button is at bottom-right corner of the screen)
+ 4. You may want to go back to _Globe_ mode. (_Globe_ button is at the bottom-right corner of the screen)
 
 ![](img/4-6-1-volume-slices.png)