Inconsistent naming of extension UUID

[WesleyBranton]

The wording in the "Updating your extension" page for self-hosted add-on updates is a little inconsistent. There is a section on that page that is referring to the UUID of the extension. However, other pages refer to this as the Add-on ID (see browser_specific_settings on MDN or Firefox (Gecko) properties on MDN). On AMO, it's called UUID, but in Firefox about:debugging it's called the Extension ID. To add to the confusion, the about:debugging page has an "Internal UUID", which is something entirely different.

Perhaps the wording should be updated or additional information should be added to clarify this.

extension-workshop/src/content/documentation/manage/updating-your-extension.md

Line 115 in a005d8f

| `addons` | `object` | An object containing one entry for each add-on to be updated. For each such entry, the name of the property must be the add-on's UUID, and the value must be an <a href="#addon-objects">object describing the add-on</a> and its updates. |