message: Add note to "abort" import
diff: @@ -180,6 +180,9 @@ where
  Function::new_native_with_env(store, env.clone(), do_debug),
  );
  + // Aborts the contract execution with an error message provided by the contract.
  + // Takes a pointer argument of a memory region that must contain an UTF-8 encoded string.
  + // Ownership of both input and output pointer is not transferred to the host.
  env_imports.insert(
  "abort",
  Function::new_native_with_env(store, env.clone(), do_abort),
  