Update readme too

Author: masongup-mdsol

README.md

@@ -182,10 +182,10 @@ implements Axum's `OptionalFromRequestParts`, so you can more easily retrieve it
 
 ### OpenTelemetry Integration
 
-There are also optional features `tracing-otel-26` and `tracing-otel-27` that pair with
-the `axum-service` feature to ensure that any outgoing requests for credentials that take
-place in the context of an incoming web request also include the proper OpenTelemetry span
-information in any requests to MAudit services. Note that it is critical to use the same
+There are also optional features `tracing-otel-26`, `tracing-otel-27`, and `tracing-otel-28`
+that pair with the `axum-service` feature to ensure that any outgoing requests for credentials
+that take place in the context of an incoming web request also include the proper OpenTelemetry
+span information in any requests to MAudit services. Note that it is critical to use the same
 version of OpenTelemetry crates as the rest of the project - if you do not, there will be 2
 or more instances of the OpenTelemetry global information, and requests may not be traced
 through properly.