docs: Update documentation and Doxygen documentation generation
diff --git a/utils/tracers/ndn-l3-rate-tracer.h b/utils/tracers/ndn-l3-rate-tracer.h
index 60bb616..9df79b1 100644
--- a/utils/tracers/ndn-l3-rate-tracer.h
+++ b/utils/tracers/ndn-l3-rate-tracer.h
@@ -36,8 +36,8 @@
 namespace ndn {
 
 /**
- * @ingroup ndn
- * @brief CCNx network-layer rate tracer
+ * @ingroup ndn-tracers
+ * @brief NDN network-layer rate tracer
  */
 class L3RateTracer : public L3Tracer
 {