Sync SDL3 wiki -> header

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include/SDL3/SDL_gamepad.h

@@ -1281,7 +1281,7 @@ extern SDL_DECLSPEC Sint16 SDLCALL SDL_GetGamepadAxis(SDL_Gamepad *gamepad, SDL_
  * You do not normally need to call this function unless you are parsing
  * SDL_Gamepad mappings in your own code.
  *
- * \param str string representing a SDL_Gamepad axis.
+ * \param str string representing a SDL_Gamepad button.
  * \returns the SDL_GamepadButton enum corresponding to the input string, or
  *          `SDL_GAMEPAD_BUTTON_INVALID` if no match was found.
  *