Change example node version manager to match description of .node-version

README.md

@@ -41,9 +41,9 @@ need to perform some initial setup steps before you can develop your action.
 > You'll need to have a reasonably modern version of
 > [Node.js](https://nodejs.org) handy (20.x or later should work!). If you are
 > using a version manager like [`nodenv`](https://github.com/nodenv/nodenv) or
-> [`nvm`](https://github.com/nvm-sh/nvm), this template has a `.node-version`
-> file at the root of the repository that will be used to automatically switch
-> to the correct version when you `cd` into the repository. Additionally, this
+> [`fnm`](https://github.com/Schniz/fnm), this template has a `.node-version`
+> file at the root of the repository that can be used to automatically switch to
+> the correct version when you `cd` into the repository. Additionally, this
 > `.node-version` file is used by GitHub Actions in any `actions/setup-node`
 > actions.