fixup! fixup! doc/guides/advanced_tutorials: added event queue guide

Author: LeonardHerbst

doc/guides/advanced_tutorials/event_queue.md

@@ -141,7 +141,7 @@ First we need to include the module in our application's Makefile:
 USEMODULE += event_periodic
 ```
 
-To create a periodic event, we need to declare and initialize a `periodic_event_t` structure.
+To create a periodic event, we need to declare and initialize a `event_periodic_t` structure.
 ```c title="main.c"
     /* This initializes the periodic event. We set the timer it should use,
      * the queue it should post to, and the event it should post.