Build MS Edit for Termux

Assuming you have already cloned the repo, here is a step-by-step guide to Build Microsoft Edit for Termux:
1. Install Rust nightly
2. Install Android NDK through Android Studio or setup manually
3. Add `aarch64-linux-android` build target
```sh
rustup target add aarch64-linux-android
```
4. Install `cargo-ndk`
```sh
cargo install cargo-ndk
```
5. Build it using
```sh
cargo ndk -t arm64-v8a build --release
```

Congrats! You have successfully built `edit` for Turmux.


The issue provides Termux build commands but names no repository file or test to update. Start by checking the existing documentation entry points and verifying the Rust nightly, Android NDK, aarch64-linux-android target, cargo-ndk, and release build steps; done means the supported instructions are documented and the command sequence works.

Written by the indexing model from the issue text.