[Rust] Add link to the doc

[asfimport]

Issue automatically created from Pull Request 9594
This is a test PR with a minor fix, that has no JIRA issue, to automatically create the issue

Reporter: Andrew Lamb / @alamb
Assignee: Andrew Lamb / @alamb

PRs and other links:

• GitHub Pull Request #9594

_{Note: This issue was originally created as ARROW-11819. Please see the migration documentation for further details.}

[asfimport]

Andrew Lamb / @alamb:
Issue resolved by pull request 9594
#9594