Fix summary

src/SUMMARY.md

@@ -3,8 +3,8 @@
 - [Introduction](./introduction.md)
 - [Hello World](./hello-world.md)
   - [Deno](./hello-world/deno.md)
-  - Node.js
-    - [ESM](./hello-world/node-js/esm.md)
+  - [Node.js](./hello-world.md/node-js.md)
+    - [ECMAScript](./hello-world/node-js/esm.md)
     - [CommonJS](./hello-world/node-js/cjs.md)
   - [React + Vite](./hello-world/react-vite.md)
   - [Vanilla JavaScript](./hello-world/vanilla-javascript.md)

src/hello-world/node-js.md

@@ -0,0 +1,4 @@
+# Node.js
+
+- [ECMAScript](./node-js/esm.md)
+- [CommonJS](./node-js/cjs.md)

src/hello-world/node-js/cjs.md

@@ -1,4 +1,4 @@
-# Node.js
+# Node.js (CommonJS)
 
 MTKruto is available for Node.js on npm as
 [`@mtkruto/node`](https://npm.im/@mtkruto/node). Here you will learn how you can

src/hello-world/node-js/esm.md

@@ -1,4 +1,4 @@
-# Node.js
+# Node.js (ECMAScript)
 
 MTKruto is available for Node.js on npm as
 [`@mtkruto/node`](https://npm.im/@mtkruto/node). Here you will learn how you can