Sync SDL wiki -> header

include/SDL_platform.h

@@ -229,7 +229,7 @@ extern "C" {
  * \returns the name of the platform. If the correct platform name is not
  *          available, returns a string beginning with the text "Unknown".
  *
- * \since This function is available since SDL 2.0.0.
+ * \since This function is available since SDL 3.0.0.
  */
 extern DECLSPEC const char * SDLCALL SDL_GetPlatform (void);