Add bug fix detail

CHANGELOG.md

@@ -33,13 +33,17 @@
   `Config.Attributes.Exclude` or disabled from Span Events specifically using
   `Config.SpanEvents.Attributes.Exclude`.
 
-
 ### Bug Fixes
 
 * Fixed an issue where it was impossible to exclude the attributes
   `error.class` and `error.message` from the root Span Event. This issue has
   now been fixed. These attributes can now be excluded from all Span Events
   using `Config.Attributes.Exclude` or `Config.SpanEvents.Attributes.Exclude`.
+
+* Fixed an issue that caused Go's data race warnings to trigger in certain situations 
+  when using the `newrelic.NewRoundTripper`. There were no reports of actual data corruption, 
+  but now the warnings should be resolved. Thank you to @blixt for bringing this to our 
+  attention!
 
 ## 3.5.0
 
@@ -170,8 +174,6 @@
   update that .NET agent to version 8.24 or later before upgrading your downstream 
   Go New Relic agents to this agent release.
 
-
-
 ## 3.3.0
 
 ### New Features