message: docs: update Wikipedia link to Polyfill description
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diff: @@ -89,7 +89,7 @@ Package name | Description
  Many browsers lack native support for some features in the latest HTML standards,
  features that Angular requires.
  -[_Polyfills_](https://en.wikipedia.org/wiki/Polyfill) can emulate the missing features.
  +[_Polyfills_](https://en.wikipedia.org/wiki/Polyfill_(programming)) can emulate the missing features.
  The [Browser Support](guide/browser-support) guide explains which browsers need polyfills and
  how you can add them.
  