Backends: SDL_GPU: typo + changelog. (#8892)

backends/imgui_impl_sdlgpu3.cpp

@@ -22,7 +22,7 @@
 //   Calling the function is MANDATORY, otherwise the ImGui will not upload neither the vertex nor the index buffer for the GPU. See imgui_impl_sdlgpu3.cpp for more info.
 
 // CHANGELOG
-//  2025-08-20: Added SwapchainComposition::SwapchainComposition and SwapchainComposition::PresentMode to configure how secondary viewports are created.
+//  2025-08-20: Added ImGui_ImplSDLGPU3_InitInfo::SwapchainComposition and ImGui_ImplSDLGPU3_InitInfo::PresentMode to configure how secondary viewports are created.
 //  2025-08-08: *BREAKING* Changed ImTextureID type from SDL_GPUTextureSamplerBinding* to SDL_GPUTexture*, which is more natural and easier for user to manage. If you need to change the current sampler, you can access the ImGui_ImplSDLGPU3_RenderState struct. (#8866, #8163, #7998, #7988)
 //  2025-08-08: Expose SamplerDefault and SamplerCurrent in ImGui_ImplSDLGPU3_RenderState. Allow callback to change sampler.
 //  2025-06-25: Mapping transfer buffer for texture update use cycle=true. Fixes artifacts e.g. on Metal backend.

docs/CHANGELOG.txt

@@ -48,6 +48,9 @@ Other Changes:
 - DrawList: Fixed CloneOutput() unnecessarily taking a copy of the ImDrawListSharedData
   pointer, which could to issue when deleting the cloned list. (#8894, #1860)
 - Examples: Android: Android+OpenGL3: update Gradle project (#8888, #8878) [@scribam]
+- Backends: SDL_GPU: Added ImGui_ImplSDLGPU3_InitInfo::SwapchainComposition and
+  PresentMode to configure how secondary viewports are created. Currently only used
+  in multi-viewport mode. (#8892)
 
 
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