[Dynamic Sampling] Add docs for Go

[cleptric]

Placeholder issue to add proper docs for Dynamic Sampling in Go.

[getsentry-release]

Routing to @getsentry/team-web-sdk-backend for triage. ⏲️

[imatwawana]

@cleptric, I think you might need to make your GitHub profile public so the bot doesn't apply the triage workflow to the issues that you open.

[cleptric]

@imatwawana It already is 🤔 Not sure why it added the label.

[imatwawana]

Huh. That's weird. @getsentry/open-source - can you check what's going on with the triage actions?

[cleptric]

@imatwawana There is already a thread on Slack. @hubertdeng123 is aware of the issue and will look into it.