Updated Android doc with proper 1.0.0 backend links to executorch (#15266)

### Summary
[PLEASE REMOVE] See [CONTRIBUTING.md's Pull
Requests](https://github.com/pytorch/executorch/blob/main/CONTRIBUTING.md#pull-requests)
for ExecuTorch PR guidelines.

[PLEASE REMOVE] If this PR closes an issue, please add a `Fixes
#<issue-id>` line.

[PLEASE REMOVE] If this PR introduces a fix or feature that should be
the upcoming release notes, please add a "Release notes: <area>" label.
For a list of available release notes labels, check out
[CONTRIBUTING.md's Pull
Requests](https://github.com/pytorch/executorch/blob/main/CONTRIBUTING.md#pull-requests).

### Test plan
[PLEASE REMOVE] How did you test this PR? Please write down any manual
commands you used and note down tests that you have written if
applicable.

Author: psiddh

docs/source/backends/coreml/coreml-overview.md

@@ -17,6 +17,7 @@ Below are the minimum OS requirements on various hardware for running a Core ML-
 - [tvOS](https://developer.apple.com/tvos/) >= 16.0
 
 ## Development Requirements
+
 To develop you need:
 
 - [macOS](https://developer.apple.com/macos) >= 13.0

docs/source/using-executorch-android.md

@@ -64,16 +64,26 @@ Click the screenshot below to watch the demo video on how to add the package and
 
 You can also directly specify an AAR file in the app. We upload pre-built AAR to S3 during each release, or as a snapshot.
 
-### Released versions (Recommended)
+### Latest Released versions (Recommended)
+
+Starting from [v1.0.0](https://github.com/pytorch/executorch/releases/tag/v1.0.0), there are respective executorch.aar library available by backends
+
+| AAR | SHASUMS | Backend |
+| ------- | --- | ------- |
+| [executorch.aar](https://ossci-android.s3.amazonaws.com/executorch/release/1.0.0-xnnpack/executorch.aar) | [executorch.aar.sha256sums](https://ossci-android.s3.amazonaws.com/executorch/release/1.0.0-xnnpack/executorch.aar.sha256sums) | [XNNPACK](backends-xnnpack.md) |
+| [executorch.aar](https://ossci-android.s3.amazonaws.com/executorch/release/1.0.0-qnn/executorch.aar) | [executorch.aar.sha256sums](https://ossci-android.s3.amazonaws.com/executorch/release/1.0.0-qnn/executorch.aar.sha256sums) | [Qualcomm AI Engine](backends-qualcomm.md) |
+| [executorch.aar](https://ossci-android.s3.amazonaws.com/executorch/release/1.0.0-vulkan/executorch.aar) | [executorch.aar.sha256sums](https://ossci-android.s3.amazonaws.com/executorch/release/1.0.0-vulkan/executorch.aar.sha256sums) | [Vulkan](backends/vulkan/vulkan-overview.md) |
+
+### Older Released versions
+
+Download the older released version
 
 | Version | AAR | SHASUMS |
 | ------- | --- | ------- |
-| [v1.0.0](https://github.com/pytorch/executorch/releases/tag/v1.0.0) | [executorch.aar](https://ossci-android.s3.amazonaws.com/executorch/release/v1.0.0/executorch.aar) | [executorch.aar.sha256sums](https://ossci-android.s3.amazonaws.com/executorch/release/v1.0.0/executorch.aar.sha256sums) |
 | [v0.7.0](https://github.com/pytorch/executorch/releases/tag/v0.7.0) | [executorch.aar](https://ossci-android.s3.amazonaws.com/executorch/release/v0.7.0/executorch.aar) | [executorch.aar.sha256sums](https://ossci-android.s3.amazonaws.com/executorch/release/v0.7.0/executorch.aar.sha256sums) |
 | [v0.6.0](https://github.com/pytorch/executorch/releases/tag/v0.6.0) | [executorch.aar](https://ossci-android.s3.amazonaws.com/executorch/release/v0.6.0/executorch.aar) | [executorch.aar.sha256sums](https://ossci-android.s3.amazonaws.com/executorch/release/v0.6.0/executorch.aar.sha256sums) |
 | [v0.5.0](https://github.com/pytorch/executorch/releases/tag/v0.5.0) | [executorch.aar](https://ossci-android.s3.amazonaws.com/executorch/release/v0.5.0-rc3/executorch.aar) | [executorch.aar.sha256sums](https://ossci-android.s3.amazonaws.com/executorch/release/v0.5.0-rc3/executorch.aar.sha256sums) |
 
-
 ### Snapshots from main branch
 
 Starting from 2025-04-12, you can download nightly `main` branch snapshots:
@@ -194,7 +204,7 @@ The following backends are available for Android:
 | [XNNPACK](https://github.com/google/XNNPACK) | CPU | [Doc](backends-xnnpack.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.md) |
+| [Vulkan](https://www.vulkan.org/) | GPU | [Doc](backends/vulkan/vulkan-overview.md) |
 
 Start with XNNPACK (CPU backend) for maximum compatibility, then add hardware-specific backends for optimization.