[Docs] add description how to use plugin with yarn berry

Author: kostyazgara

CHANGELOG.md

@@ -24,6 +24,7 @@ This change log adheres to standards from [Keep a CHANGELOG](http://keepachangel
 - [Tests] [`order`]: add tests for `pathGroupsExcludedImportTypes: ['type']` ([#2158], thanks [@atav32])
 - [Docs] [`order`]:  improve the documentation for the `pathGroupsExcludedImportTypes` option ([#2156], thanks [@liby])
 - [Tests] [`no-cycle`]: Restructure test files ([#1517], thanks [@soryy708])
+- [Docs] add description how to use plugin with yarn berry ([#2179], thanks [@KostyaZgara])
 
 ## [2.23.4] - 2021-05-29
 
@@ -819,6 +820,7 @@ for info on changes for earlier releases.
 
 [`memo-parser`]: ./memo-parser/README.md
 
+[#2179]: https://github.com/import-js/eslint-plugin-import/pull/2179
 [#2160]: https://github.com/import-js/eslint-plugin-import/pull/2160
 [#2158]: https://github.com/import-js/eslint-plugin-import/pull/2158
 [#2156]: https://github.com/import-js/eslint-plugin-import/pull/2156
@@ -1357,6 +1359,7 @@ for info on changes for earlier releases.
 [@kiwka]: https://github.com/kiwka
 [@klimashkin]: https://github.com/klimashkin
 [@kmui2]: https://github.com/kmui2
+[@KostyaZgara]: https://github.com/KostyaZgara
 [@knpwrs]: https://github.com/knpwrs
 [@laysent]: https://github.com/laysent
 [@le0nik]: https://github.com/le0nik

README.md

@@ -348,6 +348,8 @@ An array of folders. Resolved modules only from those folders will be considered
 
 This option is also useful in a monorepo setup: list here all directories that contain monorepo's packages and they will be treated as external ones no matter which resolver is used.
 
+If you are using `yarn` PnP as your package manager, add the `.yarn` folder and all your installed dependencies will be considered as `external`, instead of `internal`.
+
 Each item in this array is either a folder's name, its subpath, or its absolute prefix path:
 
 - `jspm_modules` will match any file or folder named `jspm_modules` or which has a direct or non-direct parent named `jspm_modules`, e.g. `/home/me/project/jspm_modules` or `/home/me/project/jspm_modules/some-pkg/index.js`.