docs: Update documentation and Doxygen documentation generation
diff --git a/utils/tracers/l2-rate-tracer.h b/utils/tracers/l2-rate-tracer.h
index 48105ac..de6ffcb 100644
--- a/utils/tracers/l2-rate-tracer.h
+++ b/utils/tracers/l2-rate-tracer.h
@@ -33,7 +33,10 @@
 namespace ns3 {
 
 /**
- * @ingroup ndn
+ * @ingroup ndn-tracers
+ * @brief Tracer to collect link-layer rate information about links
+ *
+ * @todo Finish implementation
  */
 class L2RateTracer : public L2Tracer
 {