message: Improve compile error message when no backends set
diff: @@ -52,7 +52,7 @@ use wasmer_runtime_core::backend::BackendCompilerConfig;
  feature = "backend-llvm",
  feature = "backend-singlepass"
  )))]
  -compile_error!("Please enable at least one of the compiler backends");
  +compile_error!("Please enable one or more of the compiler backends");
  #[derive(Debug, StructOpt)]
  #[structopt(name = "wasmer", about = "Wasm execution runtime.", author)]
  