Update routing.md

aspnetcore/mvc/controllers/routing.md

@@ -290,6 +290,8 @@ public class MyDemoController : Controller
 > [!NOTE]
 > The route templates above don't define route parameters for `action`, `area`, and `controller`. In fact, these route parameters are not allowed in attribute routes. Since the route template is already associated with an action, it wouldn't make sense to parse the action name from the URL.
 
+## Attribute routing with Http[Verb] attributes
+
 Attribute routing can also make use of the `Http[Verb]` attributes such as `HttpPostAttribute`. All of these attributes can accept a route template. This example shows two actions that match the same route template:
 
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