Revert "docs: update CLI dev env setup instructions (#669)"

This reverts commit ee0dbe9.

cli/DEVELOPER_GUIDE.md

@@ -1,17 +1,13 @@
 # Developing the CALM CLI
 
-## Prerequisites
-
-We recommend using Node v20.18.1 (use `nvm` to manage node versions if needed).  The `canvas` package we use does not seem to be compatible with later versions of node.
-
 ## Building & linking the CLI
 
-Clone the project and run the following commands from within this `cli` directory:
+Clone the project and run the following commands:
 
 ```shell
 npm install
 npm run build
-npx link .
+npx link
 ```
 
 When you've made a change to the CLI and want to test it out, you can rerun the build and link steps.