message: [cli] fix println usage in new contract template
diff: #![cfg_attr(not(any(test, feature = "std")), no_std)]
  use ink_core::{
  - env::println,
  memory::format,
  storage,
  };
  @@ -33,7 +32,7 @@ contract! {
  /// Returns the current state.
  pub(external) fn get(&self) -> bool {
  - println(&format!("Storage Value: {:?}", *self.value));
  + env.println(&format!("Storage Value: {:?}", *self.value));
  *self.value
  }
  }
  