`videoUrl` parameter documented incorrectly

[creativecreatorormaybenot]

In the docs, you state that in Snapkit.share:

SnapchatMediaType.VIDEO requires videoUrl to be non null. [...] videoUrl is a String that contains an external url eg. https://domain.com/video.mp4/

This, however, is not accurate because:

1. There is no videoUrl parameter - there only is a videoPath parameter.
2. The videoPath parameter loads the video from local assets (the rootBundle) rather than from an external URL.