docs(readme): add usage instructions for Prettier 3

Closes #102.

Co-authored-by: James <5511220+Zamiell@users.noreply.github.com>

readme.md

@@ -28,6 +28,18 @@ Note that _`prettier` and `typescript` are peer dependencies, so make sure you h
 
 ## Usage
 
+### Prettier 3
+
+Automatic plugin discovery [has been removed](https://github.com/prettier/prettier/pull/14759). Thus you need to configure Prettier to use the plugin according to the [Plugins docs](https://prettier.io/docs/en/plugins.html), for example by adding it to the `plugins` config option:
+
+```json
+{
+  "plugins": ["prettier-plugin-organize-imports"]
+}
+```
+
+### Prettier 2
+
 The plugin will be loaded by Prettier automatically. No configuration needed.
 
 Note that automatic plugin discovery is not supported with some package managers, e. g. Yarn PnP (see https://github.com/prettier/prettier/issues/8474). In that case follow the instructions for Prettier 3 above.
@@ -78,6 +90,8 @@ This plugin acts outside of [Prettier's scope](https://prettier.io/docs/en/ratio
 
 ## Changelog
 
+Version `3.2.3` updates the readme with instructions for Prettier 3.
+
 Version `3.2.2` fixes a performance regression introduced in `3.2.0`.
 
 Version `3.2.1` fixes the implementation of the language service host's `getCurrentDirectory` method to return the directory containing the tsconfig, rather than using `ts.sys.getCurrentDirectory` (which returns `process.cwd()`). This should prevent issues with resolving compiler plugins with Volar (which is used for Vue support).