[njs] Fixed invalid link in README.md.

[noreply at nginx.com]

details:   https://github.com/nginx/njs/commit/873664f3453908f84cf5421e17f093666c0d2b41
branches:  master
commit:    873664f3453908f84cf5421e17f093666c0d2b41
user:      Xiaobo Liu <cppcoffee at gmail.com>
date:      Tue, 1 Jul 2025 17:31:16 +0800
description:
Fixed invalid link in README.md.


---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index f81075ce..d196510c 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ NGINX JavaScript, also known as [NJS](https://nginx.org/en/docs/njs/), is a dyna
   - [Enabling the NGINX JavaScript modules](#enabling-the-nginx-javascipt-modules)
   - [Basics of writing .js script files](#basics-of-writing-js-script-files)
   - [Reference of custom objects, methods, and properties](#reference-of-custom-objects-methods-and-properties)
-  - [Example: Hello World](#hello-world)
+  - [Example: Hello World](#example-hello-world)
   - [The NJS command line interface (CLI)](#the-njs-command-line-interface-cli)
 - [Building from source](#building-from-source)
   - [Installing dependencies](#installing-dependencies)