FIX: link for getting-started Ruby (open-telemetry#1571)

Co-authored-by: Kayla Reopelle (she/her) <[email protected]>
Co-authored-by: Matthew Wear <[email protected]>

README.md

@@ -67,7 +67,7 @@ Apache 2.0 - See [LICENSE][license-url] for more information.
 [contrib-repo]: https://github.com/open-telemetry/opentelemetry-ruby-contrib
 [contrib-instrumentations]: https://github.com/open-telemetry/opentelemetry-ruby-contrib/tree/main/instrumentation
 [examples-github]: https://github.com/open-telemetry/opentelemetry-ruby/tree/main/examples
-[getting-started]: https://opentelemetry.io/docs/ruby/
+[getting-started]: https://opentelemetry.io/docs/languages/ruby/
 [issues-good-first-issue]: https://github.com/open-telemetry/opentelemetry-ruby/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22
 [issues-help-wanted]: https://github.com/open-telemetry/opentelemetry-ruby/issues?q=is%3Aissue+is%3Aopen+label%3A%22help+wanted%22
 [license-image]: https://img.shields.io/badge/license-Apache_2.0-green.svg?style=flat