docs: update output format description to include IIFE (#1038)

Author: chenjiahan

website/docs/en/guide/basic/output-format.mdx

@@ -5,7 +5,7 @@ import MF from '../../shared/components/MF.mdx';
 
 # Output format
 
-There are four supported output formats for the generated JavaScript files in Rslib: `esm`, `cjs`, `umd`, and `mf`. In this chapter, we will introduce the differences between these formats and how to choose the right one for your library.
+There are multiple supported output formats for the generated JavaScript files in Rslib: [ESM](#esm--cjs), [CJS](#esm--cjs), [UMD](#umd), [MF](#mf), and [IIFE](#iife). In this chapter, we will introduce the differences between these formats and how to choose the right one for your library.
 
 ## ESM / CJS
 

website/docs/zh/guide/basic/output-format.mdx

@@ -5,7 +5,7 @@ import MF from '../../shared/components/MF.mdx';
 
 # 产物输出格式
 
-Rslib 支持四种 JavaScript 文件的输出格式：`esm`、`cjs`、`umd` 和 `mf`。在本章中，我们将介绍这些格式之间的区别以及如何为你的库选择合适的格式。
+Rslib 支持多种 JavaScript 文件的输出格式：[ESM](#esm--cjs)、[CJS](#esm--cjs)、[UMD](#umd)、[MF](#mf) 和 [IIFE](#iife)。在本章中，我们将介绍这些格式之间的区别以及如何为你的库选择合适的格式。
 
 ## ESM / CJS