message: Removed unnecessary comments from Building.md
diff: @@ -26,7 +26,7 @@ making real code.
  You must support the rust target `wasm32-unknown-unknown`.
  Check which ones you currently have installed via
  -`rustup target listfix conflicts and then com --installed`. If wasm32 is not on that list, install using
  +`rustup target list --installed`. If wasm32 is not on that list, install using
  `rustup target add wasm32-unknown-unknown`
  ## Building
  