Link to Unicode 18 package

Author: mathiasbynens

README.md

@@ -68,6 +68,7 @@ For more information, see the README for the package you’re interested in. [He
 - [_@unicode/unicode-15.1.0_](https://npmjs.org/package/@unicode/unicode-15.1.0#readme) ([repository](https://github.com/node-unicode/unicode-15.1.0#readme))
 - [_@unicode/unicode-16.0.0_](https://npmjs.org/package/@unicode/unicode-16.0.0#readme) ([repository](https://github.com/node-unicode/unicode-16.0.0#readme))
 - [_@unicode/unicode-17.0.0_](https://npmjs.org/package/@unicode/unicode-17.0.0#readme) ([repository](https://github.com/node-unicode/unicode-17.0.0#readme))
+- [_@unicode/unicode-18.0.0_](https://npmjs.org/package/@unicode/unicode-18.0.0#readme) ([repository](https://github.com/node-unicode/unicode-18.0.0#readme))
 
 Note that these READMEs are auto-generated by this script, too – they describe all the data that is available for that particular Unicode version. To programmatically get this list of available categories, scripts, script extensions, blocks, and properties for a given Unicode version, just `import` the main module for that version: