SDL: include: Added missing RWops documentation.

From 447c29e65c4611645c206f063d68bc94c9a611e0 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Wed, 13 Mar 2024 12:36:59 -0400
Subject: [PATCH] include: Added missing RWops documentation.

---
 include/SDL3/SDL_rwops.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/SDL3/SDL_rwops.h b/include/SDL3/SDL_rwops.h
index 1caddb340322e..2d2b53f2a2ce0 100644
--- a/include/SDL3/SDL_rwops.h
+++ b/include/SDL3/SDL_rwops.h
@@ -267,6 +267,9 @@ extern DECLSPEC SDL_RWops *SDLCALL SDL_RWFromConstMem(const void *mem, size_t si
  *
  * You must free the returned pointer with SDL_CloseRW().
  *
+ *
+ * \param iface The function pointers that implement this RWops.
+ * \param userdata The app-controlled pointer that is passed to iface's functions when called.
  * \returns a pointer to the allocated memory on success, or NULL on failure;
  *          call SDL_GetError() for more information.
  *