fix: typos

Co-authored-by: Brett Zamir <brettz9@yahoo.com>

Author: leogurja

src/index.js

@@ -59,7 +59,7 @@ import validTypes from './rules/validTypes.js';
 import { getJsdocProcessorPlugin } from './getJsdocProcessorPlugin.js';
 
 /**
- * @typedef {"recommended" | "stylistic" | "contents" | "logical"} ConfigGrous
+ * @typedef {"recommended" | "stylistic" | "contents" | "logical"} ConfigGroups
  * @typedef {"" | "-typescript" | "-typescript-flavor"} ConfigVariants
  * @typedef {"" | "-error"} ErrorLevelVariants
  * @type {import('eslint').ESLint.Plugin & {