Clarify documentation about route_layer (#2154)

axum/src/docs/method_routing/route_layer.md

@@ -2,8 +2,9 @@ Apply a [`tower::Layer`] to the router that will only run if the request matches
 a route.
 
 Note that the middleware is only applied to existing routes. So you have to
-first add your routes (and / or fallback) and then call `layer` afterwards. Additional
-routes added after `layer` is called will not have the middleware added.
+first add your routes (and / or fallback) and then call `route_layer`
+afterwards. Additional routes added after `route_layer` is called will not have
+the middleware added.
 
 This works similarly to [`MethodRouter::layer`] except the middleware will only run if
 the request matches a route. This is useful for middleware that return early

axum/src/docs/routing/route_layer.md

@@ -2,8 +2,9 @@ Apply a [`tower::Layer`] to the router that will only run if the request matches
 a route.
 
 Note that the middleware is only applied to existing routes. So you have to
-first add your routes (and / or fallback) and then call `layer` afterwards. Additional
-routes added after `layer` is called will not have the middleware added.
+first add your routes (and / or fallback) and then call `route_layer`
+afterwards. Additional routes added after `route_layer` is called will not have
+the middleware added.
 
 This works similarly to [`Router::layer`] except the middleware will only run if
 the request matches a route. This is useful for middleware that return early