refactor: prose around basic flow

Signed-off-by: Victor Adossi <[email protected]>

Author: vados-cosmonic

design/mvp/WIT.md

@@ -995,7 +995,8 @@ interface i {
 
 #### Scenario: Stabilization of a new feature
 
-This section lays out the basic flow and expected usage of feature gate machinery when stabilizing a new feature.
+This section lays out the basic flow and expected usage of feature gate machinery
+ when stabilizing new features and deprecating old ones.
 
 Assume the following WIT package as the initial interface: