update comments

src/client/app/router.ts

@@ -21,12 +21,12 @@ export interface Router {
    */
   go: (to?: string) => Promise<void>
   /**
-   * Called before the route changes. Return false to cancel the navigation.
+   * Called before the route changes. Return `false` to cancel the navigation.
    */
   onBeforeRouteChange?: (to: string) => Awaitable<void | boolean>
   /**
    * Called before the page component is loaded (after the history state is
-   * updated). Return false to cancel the navigation.
+   * updated). Return `false` to cancel the navigation.
    */
   onBeforePageLoad?: (to: string) => Awaitable<void | boolean>
   /**