Sync SDL3 wiki -> header

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include/SDL3/SDL_gpu.h

@@ -3622,7 +3622,7 @@ extern SDL_DECLSPEC SDL_GPUFence *SDLCALL SDL_SubmitGPUCommandBufferAndAcquireFe
  * \returns true on success, false on error; call SDL_GetError() for more
  *          information.
  *
- * \since This function is available since SDL 3.1.3.
+ * \since This function is available since SDL 3.1.6.
  *
  * \sa SDL_AcquireGPUCommandBuffer
  * \sa SDL_AcquireGPUSwapchainTexture
@@ -3752,7 +3752,7 @@ extern SDL_DECLSPEC bool SDLCALL SDL_GPUTextureSupportsSampleCount(
  * \param depth_or_layer_count depth for 3D textures or layer count otherwise.
  * \returns the size of a texture with this format and dimensions.
  *
- * \since This function is available since SDL 3.1.3.
+ * \since This function is available since SDL 3.1.6.
  */
 extern SDL_DECLSPEC Uint32 SDLCALL SDL_CalculateGPUTextureFormatSize(
     SDL_GPUTextureFormat format,