Changes

If you're already familiar with add-on development or you think you're a good technical writer, help us improve the WebExtensions API reference documentation on [MDN](https://developer.mozilla.org/Add-ons) MDN] or the Firefox-specific documentation for add-on developers on [Extension Workshop](https://extensionworkshop.com)Extension Workshop]. The list of open issues for Extension Workshop can be found on in the [extension-workshop repository](https://github.com/mozilla/extension-workshop/issues) extension-workshop repository] on Github.