Runner Configuration Docs doesn't explain how to apply config changes

Problem to solve

The Runner Advanced Configuration documentation doesn't explain how changes to the configuration file (config.toml) are applied.

Does the runner need to be restarted or is there a command similar to gitlab-ctl reconfigure?

Further details

(None.)

Proposal

Answer the question above and make sure the documentation gives this answer as well.

Who can address the issue

Any engineer who is familiar with the Runner configuration.

Other links/references