Fix up some Docs (#10038)

Propagating some changes made to the release/0.6 docs so that future
release can get them too

Author: mcr229

docs/source/using-executorch-building-from-source.md

@@ -29,7 +29,7 @@ Windows (x86_64)
   - Otherwise, Python's built-in virtual environment manager `python venv` is a good alternative.
 * `g++` version 7 or higher, `clang++` version 5 or higher, or another
   C++17-compatible toolchain.
-* `python` version 3.10-3.12 
+* `python` version 3.10-3.12
 
 Note that the cross-compilable core runtime code supports a wider range of
 toolchains, down to C++17. See the [Runtime Overview](./runtime-overview.md) for
@@ -231,7 +231,7 @@ Assuming Android NDK is available, run:
 mkdir cmake-android-out && cd cmake-android-out
 
 # point -DCMAKE_TOOLCHAIN_FILE to the location where ndk is installed
-cmake -DCMAKE_TOOLCHAIN_FILE=/Users/{user_name}/Library/Android/sdk/ndk/27.2.12479018/build/cmake/android.toolchain.cmake  -DANDROID_ABI=arm64-v8a ..
+cmake -DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK/build/cmake/android.toolchain.cmake  -DANDROID_ABI=arm64-v8a ..
 
 cd  ..
 cmake --build  cmake-android-out  -j9

docs/source/using-executorch-faqs.md

@@ -18,7 +18,7 @@ if you are using Ubuntu, or use an equivalent install command.
 
 ### Missing out variants: { _ }
 
-The model likely contains torch custom operators. Custom ops need an Executorch implementation and need to be loaded at export time. See the [ExecuTorch Custom Ops Documentation](https://pytorch.org/executorch/main/kernel-library-custom-aten-kernel.html#apis) for details on how to do this.
+The model likely contains torch custom operators. Custom ops need an Executorch implementation and need to be loaded at export time. See the [ExecuTorch Custom Ops Documentation](kernel-library-custom-aten-kernel.md#apis) for details on how to do this.
 
 ### RuntimeError: PyTorch convert function for op _ not implemented
 
@@ -32,7 +32,7 @@ ExecuTorch error codes are defined in [executorch/core/runtime/error.h](https://
 
 If building the runtime from source, ensure that the build is done in release mode. For CMake builds, this can be done by passing `-DCMAKE_BUILD_TYPE=Release`.
 
-Ensure the model is delegated. If not targeting a specific accelerator, use the XNNPACK delegate for CPU performance. Undelegated operators will typically fall back to the ExecuTorch portable library, which is designed as a fallback, and is not intended for performance sensitive operators. To target XNNPACK, pass an `XnnpackPartitioner` to `to_edge_transform_and_lower`. See [Building and Running ExecuTorch with XNNPACK Backend](https://pytorch.org/executorch/main/tutorial-xnnpack-delegate-lowering.html) for more information.
+Ensure the model is delegated. If not targeting a specific accelerator, use the XNNPACK delegate for CPU performance. Undelegated operators will typically fall back to the ExecuTorch portable library, which is designed as a fallback, and is not intended for performance sensitive operators. To target XNNPACK, pass an `XnnpackPartitioner` to `to_edge_transform_and_lower`. See [Building and Running ExecuTorch with XNNPACK Backend](tutorial-xnnpack-delegate-lowering.md) for more information.
 
 Thread count can have a significant impact on CPU performance. The optimal thread count may depend on the model and application. By default, ExecuTorch will currently use as many threads as there are cores. Consider setting the thread count to cores / 2, or just set to 4 on mobile CPUs.
 
@@ -41,11 +41,11 @@ Thread count can be set with the following function. Ensure this is done prior t
 ::executorch::extension::threadpool::get_threadpool()->_unsafe_reset_threadpool(num_threads);
 ```
 
-For a deeper investgiation into model performance, ExecuTorch supports operator-level performance profiling. See [Using the ExecuTorch Developer Tools to Profile a Model](https://pytorch.org/executorch/main/tutorials/devtools-integration-tutorial.html) for more information.
+For a deeper investgiation into model performance, ExecuTorch supports operator-level performance profiling. See [Using the ExecuTorch Developer Tools to Profile a Model](devtools-integration-tutorial.md) for more information.
 
 ### Missing Logs
 
-ExecuTorch provides hooks to route runtime logs. By default, logs are sent to stdout/stderr, but users can override `et_pal_emit_log_message` to route logs to a custom destination. The Android and iOS extensions also provide out-of-box log routing to the appropriate platform logs. See [Runtime Platform Abstraction Layer (PAL)](https://pytorch.org/executorch/main/runtime-platform-abstraction-layer.html) for more information.
+ExecuTorch provides hooks to route runtime logs. By default, logs are sent to stdout/stderr, but users can override `et_pal_emit_log_message` to route logs to a custom destination. The Android and iOS extensions also provide out-of-box log routing to the appropriate platform logs. See [Runtime Platform Abstraction Layer (PAL)](runtime-platform-abstraction-layer.md) for more information.
 
 ### Error setting input: 0x10 / Attempted to resize a bounded tensor...