Sync SDL3 wiki -> header

[ci skip]

include/SDL3/SDL_gpu.h

@@ -302,9 +302,8 @@ typedef struct SDL_GPUGraphicsPipeline SDL_GPUGraphicsPipeline;
  * buffer A and then command buffer B all commands in A will begin executing
  * before any command in B begins executing.
  *
- * In multi-threading scenarios, you should acquire and submit a command
- * buffer on the same thread. As long as you satisfy this requirement, all
- * functionality related to command buffers is thread-safe.
+ * In multi-threading scenarios, you should only access a command buffer on
+ * the thread you acquired it from.
  *
  * \since This struct is available since SDL 3.0.0
  *