Fix doclinker sending multiple comments on each label event

[SD10]

We need to start testing the current peril rules before adding any more. There's a small problem with the doclinker.ts so it's been temporarily disabled. This is blocking re-enabling it

[SD10]

The problem with the doclinker is that it checks if an issue contains the question label and then recommends some documentation.

This is a problem because after the issue is labeled a question, if more labels are added, the doclinker gets re-triggered because the issue still contains the question label.

GitHub also sends one request per label so this leads to a lot of spam.

Reproduce by:

1. Issue is labeled as question == doclinker triggered
2. Issue is then labeled as documentation == doclinker triggered
   ...

For these reasons, I don't think there is a way to only trigger an event when a specific label is added.

We would need danger/peril#259

[sunshinejr]

@SD10 do you have some meta-data that could help with identifying actions that were caused by peril maybe? Or can you make an API request without activating webhook? 🤔