This commit modifies the text to:
1. Removes unnecessary screenshots.
2. Use the numbered-style format.
3. I also removed the instructions for generating an access token.
I took a look at Dropbox's docs and you shouldn't need that
for a webhook setup. The whole point behind a webhook is that
one can get by without using OAuth.
4. Rearranges the instructions to only contain 4 steps. For
uncomplicated instructions, that seems to be the ideal number.
This is just a basic Dropbox webhook integration. It just
notifies a user when something has changed, it does not
specify what changed. Doing so would require storing data,
as Dropbox API was created mainly for file managers, not
integrations like this.
Closes#5672