message: Update the error messsage
diff: @@ -281,7 +281,7 @@ fn build_isa(sess: &Session, backend_config: &BackendConfig) -> Box<dyn isa::Tar
  Some(value) => {
  let mut builder = cranelift_codegen::isa::lookup_variant(target_triple, variant).unwrap();
  if let Err(_) = builder.enable(value) {
  - sess.fatal("The target cpu isn't currently supported by Cranelift.");
  + sess.fatal("The specified target cpu isn't currently supported by Cranelift.");
  }
  builder
  }
  