doc: tracing: Include events in the documentation
Updates the tracing documentation to include a mention about the
event tracking list.
@@ -368,6 +368,7 @@ their usage. Currently, the following lists can be enabled::
struct k_mbox *_track_list_k_mbox;
struct k_pipe *_track_list_k_pipe;
struct k_queue *_track_list_k_queue;
+ struct k_event *_track_list_k_event;
Those global variables are the head of each list - they can be traversed
with the help of macro ``SYS_PORT_TRACK_NEXT``. For instance, to traverse
