Feature request: Slack integration - provide more context about what was updated

[tyronedougherty]

Hey Gitbook team 👋

I really love that you have a Slack plugin, but right now it's not super useful outside of saying that "something was updated in x space". For example:

GitBook [App] Content of Example Space Name has been updated

This isn't very useful information. We want to keep our wider team informed of changes to our Gitbook docs - even if they don't have a seat on Gitbook. Right now this is a very manual process, because I have to go and summarise the changes each time we push a change.

Instead, it would be lovely if the Slack integration posted a message like:

GitBook [App] Content of Example Space Name has been updated by Firstname Lastname: Add background info on xyz

Pages updated:

• API - xyz
• Concept - xyz

This makes it super easy to understand what was changed, who changed it, and where I can see the new content. I tried to do some of this in PR #168 but unfortunately it doesn't seem that the right data is available via the API.

Hope this is something you're able to add to your backlog. Thank you! 😄