Docs out of date for video

[doublethefish]

Describe the bug
I just hit the issues described in #401 and checked the message from @christian-bromann against the docs https://webdriver.io/docs/wdio-video-reporter/.

const video = require('wdio-video-reporter')

reporters: [ [video, { saveAllVideos: true, videoSlowdownMultiplier: 3, videoRenderTimeout: 5, }] ],

This is not how you are suppose to add the reporter to the config, instead just do:

reporters: [
['video', {
saveAllVideos: true,
videoSlowdownMultiplier: 3,
videoRenderTimeout: 5,
}]
],

It appears that the docs are simply out of date.

Log
See #401

To Reproduce
See #401

Expected behavior
The docs to match the tools.

Environment (please complete the following information):
See #401

Desktop (please complete the following information):
See #401

Smartphone (please complete the following information):
See #401

Additional context
Add any other context about the problem here.

[christian-bromann]

@doublethefish thanks for pointing that out, mind raising a PR with a fix?