message: Fix errata in rustup command
diff: @@ -41,7 +41,7 @@ sudo add-apt-repository ppa:mmstick76/ion-shell
  # Build dependencies
  Those who are developing software with Rust should install the [Rustup toolchain manager](https://rustup.rs/).
  -After installing rustup, run `rustup override 1.31.0` to set your Rust toolchain to the version that Ion is
  +After installing rustup, run `rustup override set 1.31.0` to set your Rust toolchain to the version that Ion is
  targeting at the moment. To build for Redox OS, `rustup override set nightly` is required to build the Redox
  dependencies.
  