Update home

home.md

@@ -16,7 +16,7 @@
 * [Controlling regional boundaries (Thumbnail Pane)](3-5-control-boundary)
 * [Undo & Redo (Actions Pane)](3-6-action-history)
 
-4 User Scenario & Tips
+4 User Scenarios & Tips
 1. [Visualizing a variable (scalar field) on horizontal planes](4-1-horizontal-scalar-field)
 2. [Visualizing a variable (scalar field) on cross sections](4-2-vertical-scalar-field)
 3. [Visualizing flow (vector field) on horizontal planes](4-3-horizontal-vector-field)