docs: add missing backticks (#862)

Author: Casmir293

docs/content/1.get-started/5.watch-outs.md

@@ -26,7 +26,7 @@ Instead, Ionic expects `<ion-router-outlet>` to show the route component, and `u
 - The root element of every page must always be `<ion-page>`. 
 ::
 
-This is required by Ionic to set up page transitions and stack navigation. Each view that is navigated to using the router must include an <ion-page> component.
+This is required by Ionic to set up page transitions and stack navigation. Each view that is navigated to using the router must include an `<ion-page>` component.
 
 ::list{type="warning"}
 - When navigating from a tabbed route to a non-tabbed route, `route.params` from the auto-imported `useRoute()` will always be an empty object.