docs: use npx instead of ember-cli global

README.md

@@ -1,11 +1,11 @@
 # @embroider/app-blueprint
 
-**Very** experimental blueprint for scaffolding ember v2 apps with Vite
+**Very** experimental blueprint for scaffolding Ember v2 apps with Vite
 
 This is likely to change on a daily basis so you have to keep up to date with the changes to expect it work. Use [ember-cli-update](https://github.com/ember-cli/ember-cli-update) to update to the latest version.
 
 ## Usage
 
 ```bash
-ember new my-fancy-app -b @embroider/app-blueprint --pnpm
-```
+npx ember-cli@latest new my-fancy-app -b @embroider/app-blueprint --pnpm
+```