message: docs: use language agnostic mdn urls
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diff: @@ -463,7 +463,7 @@ The link parameters array affords the flexibility to represent any routing depth
  When the router navigates to a new component view, it updates the browser's location and history with a URL for that view.
  -Modern HTML5 browsers support [history.pushState](https://developer.mozilla.org/en-US/docs/Web/API/History_API/Working_with_the_History_API#adding_and_modifying_history_entries title="HTML5 browser history push-state"), a technique that changes a browser's location and history without triggering a server page request.
  +Modern HTML5 browsers support [history.pushState](https://developer.mozilla.org/docs/Web/API/History_API/Working_with_the_History_API#adding_and_modifying_history_entries title="HTML5 browser history push-state"), a technique that changes a browser's location and history without triggering a server page request.
  The router can compose a "natural" URL that is indistinguishable from one that would otherwise require a page load.
  Here's the Crisis Center URL in this "HTML5 pushState" style:
  @@ -514,7 +514,7 @@ This option is only available if application URLs look like normal web URLs with
  ## `<base href>`
  -The router uses the browser's [history.pushState](https://developer.mozilla.org/en-US/docs/Web/API/History_API/Working_with_the_History_API#adding_and_modifying_history_entries "HTML5 browser history push-state") for navigation.
  +The router uses the browser's [history.pushState](https://developer.mozilla.org/docs/Web/API/History_API/Working_with_the_History_API#adding_and_modifying_history_entries "HTML5 browser history push-state") for navigation.
  `pushState` lets you customize in-application URL paths; for example, `localhost:4200/crisis-center`.
  The in-application URLs can be indistinguishable from server URLs.
  