docs: remove CJS leftover

Author: ghiscoding

packages/excel-builder-vanilla/README.md

@@ -16,16 +16,12 @@ npm install excel-builder-vanilla
 
 The project offers 3 different bundle types, choose the best for your use case
 1. ESM: to `import from` (preferred)
-2. CJS: CommonJS to support old Node `require()` - will possibly be removed in the future
-3. IIFE: standalone script with `ExcelBuilder` available on the `window` object
+2. IIFE: standalone script with `ExcelBuilder` available on the `window` object
 
 ```ts
 // ESM - npm install
 import { createWorksheet } from 'excel-builder-vanilla';
 
-// CJS - npm install
-const { createWorksheet } = require('excel-builder-vanilla');
-
 // IIFE - CDN
 <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/excel-builder.iife.js"></script>
 <script>