message: Update sync_manager.hpp
diff: @@ -108,8 +108,7 @@ public:
  // disabled afterwards, and currently is incompatible with automatic failover.
  void enable_session_multiplexing();
  - // Closes the sync manager and terminates all sessions created by it. This should be a destructor, but there's
  - // a reference loop between SyncManager and SyncUser.
  + // Destroys the sync manager, terminates all sessions created by it, and stops its SyncClient.
  ~SyncManager();
  // Sets the log level for the Sync Client.
  