Use actual slack channel name in badge (#1002)

Co-authored-by: Josh Suereth <[email protected]>

Author: thompson-tomo

README.md

@@ -14,7 +14,7 @@ _Treat your telemetry like a public API_
 [![codecov](https://codecov.io/gh/open-telemetry/weaver/graph/badge.svg?token=tmWKFoMT2G)](https://codecov.io/gh/open-telemetry/weaver)
 [![build](https://github.com/open-telemetry/weaver/actions/workflows/audit.yml/badge.svg)](https://github.com/open-telemetry/weaver/actions/workflows/audit.yml)
 [![License](https://img.shields.io/badge/License-Apache_2.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
-[![Slack](https://img.shields.io/badge/Slack-OpenTelemetry_Weaver-purple)](https://cloud-native.slack.com/archives/C0697EXNTL3)
+[![Slack](https://img.shields.io/badge/Slack-%23otel--weaver-purple)](https://cloud-native.slack.com/archives/C0697EXNTL3)
 
 OpenTelemetry Weaver helps teams build observability by design, enabling consistent, type-safe, and automated telemetry through semantic conventions. With Weaver, you can define, validate, and evolve your telemetry schemas, ensuring reliability and clarity across your systems.