Add routerLink to ion item?

**URL**
The URL at which the content is missing or inaccurate
https://ionicframework.com/docs/api/item

**What is missing or inaccurate about the content on this page?**
I believe it would be better to add explicitly api doc on usage of routerLink for ion-item, besides only mentioning routerDirection and routerAnimation

Start with the Ionic ion-item API documentation at https://ionicframework.com/docs/api/item and review how routerDirection and routerAnimation are currently documented. Add explicit usage documentation for routerLink, with the ion-item page clearly covering this behavior.

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