How to properly use async/await within function?

Question

I'm not quite sure how async/await works in JS. Sometimes, I see people writing like the first function and sometimes the second. I wonder, Is there any difference between the two usages of async/await within the functions below?

And how to properly use it?

async function fetchSomething() {
  return await fetch('/article/promise-chaining/user.json');
}

VS

async function fetchSomething() {
  return fetch('/article/promise-chaining/user.json');
}