Update traefik.md for note a potential API Error solution

[Rycochet]

Proposed change

Add note about potentially needing --api.insecure=true in the traefik config to allow the Traefik widget API access. Included a link to the official Traefik docs for how to do this and only quoted the CLI change for brevity.

Type of change

• New service widget
• Bug fix (non-breaking change which fixes an issue)
• New feature or enhancement (non-breaking change which adds functionality)
• Documentation only
• Other (please explain)

[shamoon]

Thanks, since this really hasn't been an issue (for anyone?) in the ~3years the widget has been around Im not going to merge this and suggest that authoritatively it should be set. I think the circumstances are specific (for example, I dont have it set and use https://traefik:443 as my url) and adding this line will potentially just create noise / confusion.

Thanks again.

[Rycochet]

Given that I'm not using SSL / 443 and am on the standard 8080 port - with no special arguments for the api except --api.dashboard=true it's worth noting that this is going to be the case for some people who try it and it doesn't work - and then decide simply to not use it (or spend time figuring out how to make it work) - this will be in the history if anyone checks on github at least ;-)

[shamoon]

Yea as a discussion might be more useful than in the docs, again given that it hasn’t really come up (I see one similar one but not exactly)