Removing third-party link

[mattmendick]

Removing the third-party link. Google is good for finding references or other discussion outside the maintainer's architectural presentations and discussion and directly related projects such as Grafana.

[claassistantio]

All committers have signed the CLA.

[rfratto]

Can you mention this change in process in the CONTRIBUTING.md file?

[slim-bean]

I'm not sure how this would really be defined in CONTRIBUTING.md and it's not really mentioned now so i don't think this is necessary.

[rfratto]

I was thinking we'd add a section showing that we don't intend to accept third-party links to content about Loki. I understand your point though, I'll leave it up to you.

[slim-bean]

It's difficult to support something like linking to an external resource, and we have been discussing this in relation to #1263 as well.

While we do not want to discourage the community from creating and promoting tutorials for Loki, it's difficult for us to provide these links on the project pages.

As this is also not typically done in other open source projects like Prometheus and Grafana, for the time being we are going to avoid this as well.

[cyriltovena]

LGTM