refactor(app/inbound): fix a broken intradoc link (#4267)

Signed-off-by: katelyn martin <[email protected]>

Author: cratelyn

linkerd/app/inbound/src/policy/http.rs

@@ -478,7 +478,7 @@ impl<T> Permitted<T> {
         (target, permit)
     }
 
-    /// Returns the [`RouteLabels`] from the underlying permit.
+    /// Returns the route labels from the underlying permit.
     pub fn route_labels(&self) -> RouteLabels {
         self.permit_ref().labels.route.clone().into()
     }