Merge pull request #15992 from Ladicek/traced-annotation-docs

Clarify where can the @Traced annotation be used

docs/src/main/asciidoc/opentracing.adoc

@@ -170,7 +170,7 @@ Hit `CTRL+C` to stop the application.
 == Tracing additional methods
 
 REST endpoints are automatically traced.
-If you need to trace additional methods, you can use the `org.eclipse.microprofile.opentracing.Traced` annotation at class or method level.
+If you need to trace additional methods, you can add the `org.eclipse.microprofile.opentracing.Traced` annotation to CDI bean classes or their non-private methods.
 
 This can be useful to trace incoming requests from non-REST calls (like request coming from a message) or to create spans inside a trace.
 
@@ -192,7 +192,7 @@ public class FrancophoneService {
 }
 ----
 
-NOTE: the best way to add OpenTracing capability to reactive messaging based applications is by adding the `Traced` annotation to all incoming methods.
+NOTE: The best way to add OpenTracing capability to reactive messaging based applications is by adding the `Traced` annotation to all incoming methods.
 
 == Additional instrumentation