Update auth docs to clarify server module usage

docs/content/docs/(documentation)/modules/auth.mdx

@@ -30,7 +30,7 @@ With a focus on flexibility and ease of integration, bknd's authentication syste
 
 ---
 
-## SDK Method: `app.module.auth.changePassword(user.id, password)`
+## Server Module: `module.auth`
 
 ### `auth.changePassword([userId], [password])`