Fixed a comment typo (thanks, Dominus!).

https://twitter.com/iniquitatis/status/1190064278365188102
diff --git a/include/SDL_events.h b/include/SDL_events.h
index 1e1e47e..eaf5743 100644
--- a/include/SDL_events.h
+++ b/include/SDL_events.h
@@ -559,7 +559,7 @@
 {
     Uint32 type;                    /**< Event type, shared with all events */
     SDL_CommonEvent common;         /**< Common event data */
-    SDL_DisplayEvent display;       /**< Window event data */
+    SDL_DisplayEvent display;       /**< Display event data */
     SDL_WindowEvent window;         /**< Window event data */
     SDL_KeyboardEvent key;          /**< Keyboard event data */
     SDL_TextEditingEvent edit;      /**< Text editing event data */