docs(v2): add a community plugin (#3616)

Add a community plugin of @easyops-cn/docusaurus-search-local.

website/community/resources.md

@@ -33,6 +33,7 @@ See the <a href={require('@docusaurus/useBaseUrl').default('showcase')}>showcase
 - [docusaurus-plugin-lunr](https://github.com/daldridge/docusaurus-plugin-lunr) - Docusaurus v2 plugin to create a local search index for use with Lunr.js
 - [docusaurus-lunr-search](https://github.com/lelouch77/docusurus-lunr-search) - Offline Search for Docusaurus v2
 - [docusaurus-search-local](https://github.com/cmfcmf/docusaurus-search-local) - Offline/local search for Docusaurus v2
+- [@easyops-cn/docusaurus-search-local](https://github.com/easyops-cn/docusaurus-search-local) - Offline/local search for Docusaurus v2 (language of zh supported)
 - [docusaurus-pdf](https://github.com/KohheePeace/docusaurus-pdf) - Generate documentation into PDF format
 - [docusaurus-plugin-sass](https://github.com/rlamana/docusaurus-plugin-sass) - Sass/SCSS stylesheets support
 - [docusaurus2-dotenv](https://github.com/jonnynabors/docusaurus2-dotenv) - A Docusaurus 2 plugin that supports dotenv and other environment variables