Fix typo in comment

notes/async-await/await-emoji.js

 // The node-fetch package provides a fetch() function for Node.js.
 // Like in a browser, this makes a Promise for an HTTP request.
-// You can install using with `npm install node-fetch`
+// You can install it using `npm install node-fetch`.
 const fetch = require('node-fetch')
 
 const README_URL = 'https://unicode.org/Public/zipped/latest/ReadMe.txt'