Clarify per-user default config location

Fixes sindresorhus#191

(cherry picked from commit fc9166a)

Author: Sindre Sorhus

readme.md

@@ -276,6 +276,8 @@ Default: System default [user config directory](https://github.com/sindresorhus/
 
 Overrides `projectName`.
 
+By default the config is stored in the [system user's config directory](https://github.com/sindresorhus/env-paths#pathsconfig); running under another user reads a different store. Set `cwd` to share across users.
+
 The only use-case I can think of is having the config located in the app directory or on some external storage.
 
 #### fileExtension

source/types.ts

@@ -163,7 +163,13 @@ export type Options<T extends Record<string, unknown>> = {
 	/**
 	__You most likely don't need this. Please don't use it unless you really have to.__
 
-	The only use-case I can think of is having the config located in the app directory or on some external storage. Default: System default user [config directory](https://github.com/sindresorhus/env-paths#pathsconfig).
+	Default: System default user [config directory](https://github.com/sindresorhus/env-paths#pathsconfig).
+
+	Overrides `projectName`.
+
+	By default the config is stored in the [system user's config directory](https://github.com/sindresorhus/env-paths#pathsconfig); running under another user reads a different store. Set `cwd` to share across users.
+
+	The only use-case I can think of is having the config located in the app directory or on some external storage.
 	*/
 	cwd?: string;