Android Docs: Fix stale backend link (android-samsung-exynos) (pytorch#15287)

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Author: psiddh

docs/source/android-backends.md

@@ -16,7 +16,7 @@ Available hardware acceleration backends for Android deployment.
 - {doc}`android-qualcomm` — Qualcomm AI Engine (NPU)
 - {doc}`android-mediatek` — MediaTek NPU acceleration
 - {doc}`android-arm-vgf` — ARM VGF Backend
-- {doc}`android-samsung-exynos` — Samsung Exynos NPU
+- {doc}`backends/samsung/samsung-overview` — Samsung Exynos NPU
 
 ```{toctree}
 :hidden:
@@ -25,4 +25,4 @@ android-vulkan
 android-qualcomm
 android-mediatek
 android-arm-vgf
-android-samsung-exynos
+backends/samsung/samsung-overview

docs/source/using-executorch-android.md

@@ -202,7 +202,6 @@ The following backends are available for Android:
 | Backend | Type | Doc |
 | ------- | -------- | --- |
 | [XNNPACK](https://github.com/google/XNNPACK) | CPU | [Doc](backends/xnnpack/xnnpack-overview.md) |
-
 | [MediaTek NeuroPilot](https://neuropilot.mediatek.com/) | NPU | [Doc](backends-mediatek.md) |
 | [Qualcomm AI Engine](https://www.qualcomm.com/developer/software/qualcomm-ai-engine-direct-sdk) | NPU | [Doc](backends-qualcomm.md) |
 | [Vulkan](https://www.vulkan.org/) | GPU | [Doc](backends/vulkan/vulkan-overview.md) |