README: Update instruction on finding Rust version #112

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atse wants to merge 1 commits from atse/thermostat:readme-rust into master
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@ -23,7 +23,7 @@ cargo build --release
The resulting ELF file will be located under `target/thumbv7em-none-eabihf/release/thermostat`.
Alternatively, you can install the Rust toolchain without Nix using rustup; see the Rust manifest file pulled in `flake.nix` to determine which Rust version to use.
Alternatively, you can install the Rust toolchain without Nix using rustup; see the `rust` variable in `flake.nix` to determine which Rust version to use.
## Debugging