SDL: Sync wiki -> header (c0644)

From c06448fe39e71c67f3c99a07da4b62b80cc9ac0d Mon Sep 17 00:00:00 2001
From: SDL Wiki Bot <[EMAIL REDACTED]>
Date: Fri, 23 Jul 2021 16:39:05 +0000
Subject: [PATCH] Sync wiki -> header

---
 include/SDL_gamecontroller.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/SDL_gamecontroller.h b/include/SDL_gamecontroller.h
index 1108d4a02..3d23972e7 100644
--- a/include/SDL_gamecontroller.h
+++ b/include/SDL_gamecontroller.h
@@ -531,6 +531,10 @@ typedef enum
  * SDL_GameController mapping. You do not normally need to call this function
  * unless you are parsing SDL_GameController mappings in your own code.
  *
+ * Note specially that "righttrigger" and "lefttrigger" map to
+ * SDL_CONTROLLER_AXIS_TRIGGERRIGHT and SDL_CONTROLLER_AXIS_TRIGGERLEFT,
+ * respectively.
+ *
  * \param str string representing a SDL_GameController axis
  * \returns the SDL_GameControllerAxis enum corresponding to the input string,
  *          or `SDL_CONTROLLER_AXIS_INVALID` if no match was found.