Add link to the run command documentation

[clayton-cornell]

PR Description

Add link in the standalone binary run topic to the run command documentation.

I added the link to https://grafana.com/docs/alloy/latest/get-started/run/binary/ because this seemed like the most logical spot in the workflow.

Which issue(s) this PR fixes

Notes to the Reviewer

PR Checklist

• [ ] CHANGELOG.md updated
• [ ] Documentation added
• [ ] Tests updated
• [ ] Config converters updated