Fix comment above `callBackgroundThenUpdateNoSpinner` function (#8382)

The comment above this function was originally written for a different
function: `callBackgroundThenUpdate`. It was mistakenly left above
`callBackgroundThenUpdateNoSpinner` in #1603 when this function was
added.

The original `callBackgroundThenUpdate` function this was written for
was removed recently in #7675, as it was no longer used.

The format of the comment has also been updated to match our
conventions, and JSDoc params have been added.

ui/app/store/actions.js

@@ -1920,14 +1920,16 @@ export function setMouseUserState (isMouseUser) {
   }
 }
 
-// Call Background Then Update
+
-//
+/**
-// A function generator for a common pattern wherein:
+ * A function generator for a common pattern wherein:
-// We show loading indication.
+ * * We call a background method.
-// We call a background method.
+ * * If it errored, we show a warning.
-// We hide loading indication.
+ * * If it didn't, we update the state.
-// If it errored, we show a warning.
+ *
-// If it didn't, we update the state.
+ * @param {*} method - The background method to call
+ * @param  {...any} args - The args to invoke the background method with
+ */
 export function callBackgroundThenUpdateNoSpinner (method, ...args) {
   return (dispatch) => {
     method.call(background, ...args, (err) => {