Nest some more namespaces

Did someone previously suggest that all namespace had been
nested?  Silly.

Signed-off-by: Stephan Pleines <pleines.stephan@gmail.com>
Change-Id: I22278c1caaeba8b47dc46fb2ed3078c20a11e190
diff --git a/aos/events/logging/log_reader.h b/aos/events/logging/log_reader.h
index 901bf32..fb19e78 100644
--- a/aos/events/logging/log_reader.h
+++ b/aos/events/logging/log_reader.h
@@ -32,8 +32,7 @@
 #include "aos/util/threaded_queue.h"
 #include "aos/uuid.h"
 
-namespace aos {
-namespace logger {
+namespace aos::logger {
 
 class EventNotifier;
 
@@ -950,7 +949,6 @@
   ConfigRemapper config_remapper_;
 };
 
-}  // namespace logger
-}  // namespace aos
+}  // namespace aos::logger
 
 #endif  // AOS_EVENTS_LOGGING_LOG_READER_H_