Update docs

Author: sy-records

docs/plugins.md

@@ -62,7 +62,7 @@ By default, the hyperlink on the current page is recognized and the content is s
 <script src="//cdn.jsdelivr.net/npm/docsify/lib/plugins/search.min.js"></script>
 ```
 
-The search ignores diacritical marks by default, but is not supported by IE. If you need support, please load this `ponyfill`
+This plugin ignores diacritical marks when performing a full text search (e.g., "cafe" will also match "café"). Legacy browsers like IE11 require the following [String.normalize()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/normalize) polyfill to ignore diacritical marks:
 
 ```html
 <script src="//polyfill.io/v3/polyfill.min.js?features=String.prototype.normalize"></script>