Update 4 1 horizontal scalar field

4-1-horizontal-scalar-field.md

@@ -10,7 +10,7 @@
 
 ##### 3. Change the settings for color mapping (if necessary).
 
-##### 4. Change the visualization modes - contour vs. raster (if necessary).
+##### 4. Change the visualization settings - contour vs. raster (if necessary).
 
 ##### 5. Explore temperature distributions at different altitudes (if any).