Update CHANGELOG PR number

Author: bryan-aguilar

CHANGELOG.md

@@ -10,7 +10,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 ### Changed
 
-- The `crosslink` make target has been updated to use the `go.opentelemetry.io/build-tools/crosslink` package. (#TBD)
+- The `crosslink` make target has been updated to use the `go.opentelemetry.io/build-tools/crosslink` package. (#2886)
 
 ## [1.7.0/0.30.0] - 2022-04-28