Update README.md

Author: ollym

resources/google_cloud_platform/README.md

@@ -70,4 +70,4 @@ The `opentelemetry-resource-detector-google_cloud_platform` gem is distributed u
 [ruby-sig]: https://github.com/open-telemetry/community#ruby-sig
 [community-meetings]: https://github.com/open-telemetry/community#community-meetings
 [slack-channel]: https://cloud-native.slack.com/archives/C01NWKKMKMY
-[discussions-url]: https://github.com/open-telemetry/opentelemetry-ruby/discussions
+[discussions-url]: https://github.com/open-telemetry/opentelemetry-ruby/discussions