Sync SDL3 wiki -> header

[ci skip]

include/SDL3/SDL_stdinc.h

@@ -2107,7 +2107,7 @@ extern SDL_DECLSPEC int SDLCALL SDL_abs(int x);
  *
  * \param x the first value to compare.
  * \param y the second value to compare.
- * \returns the lesser of `x` and `y`.
+ * \returns the greater of `x` and `y`.
  *
  * \threadsafety It is safe to call this macro from any thread.
  *