Link tracing crate in new changelog entry

Co-authored-by: Cijo Thomas <[email protected]>

Author: dylanahsmith

opentelemetry-appender-tracing/CHANGELOG.md

@@ -3,7 +3,7 @@
 ## vNext
 
 - Bump msrv to 1.75.0.
-- New experimental feature to use trace\_id & span\_id from spans created through the tracing crate (experimental_use_tracing_span_context) [#2438](https://github.com/open-telemetry/opentelemetry-rust/pull/2438)
+- New experimental feature to use trace\_id & span\_id from spans created through the [tracing](https://crates.io/crates/tracing) crate (experimental_use_tracing_span_context) [#2438](https://github.com/open-telemetry/opentelemetry-rust/pull/2438)
 
 
 ## 0.27.0