4-5-isosurface.md

@@ -2,7 +2,7 @@
 
 > NOTE: Most parts of this guide can also be applied to the visualization of any 3D iso-level surface of any variable.
 
-![](img/4-5-isosurface)
+![](img/4-5-isosurface.png)
 
 > For the terms & names of UI components, refer to _[UI Components](3-1-ui-components)_.