Add link and details about npx comand (#37376)

docs/getting-started/create-block/README.md

@@ -18,7 +18,7 @@ From your plugins directory, to create your block run:
 npx @wordpress/create-block gutenpride
 ```
 
-The above command creates a new directory called `gutenpride`, installs the necessary files, and builds the block plugin. If you want an interactive mode that prompts you for details, run the command without the `gutenpride` name.
+The [npx command](https://docs.npmjs.com/cli/v7/commands/npx) runs a command from a remote package, in this case our create-block package that will create a new directory called `gutenpride`, installs the necessary files, and builds the block plugin. If you want an interactive mode that prompts you for details, run the command without the `gutenpride` name.
 
 You now need to activate the plugin from inside wp-admin plugins page.