Remove mdn.io links (#1097)

Author: amirhhashemi

src/routes/solid-router/reference/components/a.mdx

@@ -2,7 +2,7 @@
 title: A
 ---
 
-Solid Router exposes the `<A />` component as a wrapper around the [native anchor tag ](https://mdn.io/a).
+Solid Router exposes the `<A />` component as a wrapper around the [native anchor tag ](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/a).
 It relies on the routing context provided by the [`<Router>` component](/solid-router/reference/components/router) and if used outside, will triggers a runtime error..
 
 `<A />` supports relative and base paths. `<a />` doesn't. But `<a />` gets augmented