Add example to generic incoming webhook

[ericholscher]

Feedback from a user:

Feature request for your docs would be to just display an actual command (including the FULL url) you can use directly with tools like curl or node/python if you create a 'generic' webhook. Or even better, just include a hint at the right path to follow for other 'generic' webhook users with any sort of working example.

I'd love to see more of these "actionable" examples in our docs. Could also play with doing small 15 second videos as well showing the setup process.

/cc @readthedocs/advocacy

[stsewd]

Just a note: this is related to our generic integration's incoming webhooks, not our webhook notifications feature.

[astrojuanlu]

15 second videos can also be GIFs 😄 And another alternative, depending on the use case, is https://asciinema.org/

[astrojuanlu]

In line with #8573, should we call these "incoming webhooks" just "integrations"? (We can continue the conversation there)

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.