message: update react nav doc to use routerLink instead of href
diff: @@ -101,7 +101,7 @@ An `IonRouterOutlet` should also not be a descendant from another `IonRouterOutl
  ## Navigation
  -There are several options available when routing to different views in an Ionic React app. Here, the `UsersListPage` uses `IonItem`'s `href` prop to specify the route to go to when the item is tapped/clicked:
  +There are several options available when routing to different views in an Ionic React app. Here, the `UsersListPage` uses `IonItem`'s `routerLink` prop to specify the route to go to when the item is tapped/clicked:
  **UsersListPage.tsx**
  @@ -116,10 +116,10 @@ const UsersListPage: React.FC = () => {
  </IonHeader>
  <IonContent>
  <IonList>
  - <IonItem href="/dashboard/users/1">
  + <IonItem routerLink="/dashboard/users/1">
  <IonLabel>User 1</IonLabel>
  </IonItem>
  - <IonItem href="/dashboard/users/2">
  + <IonItem routerLink="/dashboard/users/2">
  <IonLabel>User 2</IonLabel>
  </IonItem>
  </IonList>
  @@ -129,7 +129,11 @@ const UsersListPage: React.FC = () => {
  };
  ```
  -Outside of an `IonItem`, you can also use React Routers [`Link`](https://reacttraining.com/react-router/web/api/Link) component to navigate between views:
  +Other components that have the `routerLink` prop are `IonButton`, `IonCard`, `IonRouterLink`, `IonFabButton`, and `IonItemOption`.
  +
  +Each of these components also have a `routerDirection` prop to explicitly set the type of page transition to use ("back", "forward", or "none").
  +
  +Outside of these components that have the `routerLink` prop, you can also use React Routers [`Link`](https://reacttraining.com/react-router/web/api/Link) component to navigate between views:
  ```html
  <Link to="/dashboard/users/1">User 1</Link>
  