message: Update `types::BlockInfo` docs
diff: @@ -36,8 +36,8 @@ pub struct BlockInfo {
  /// # };
  /// # extern crate chrono;
  /// use chrono::NaiveDateTime;
  - /// let seconds = env.block.time.nanos() / 1_000_000_000;
  - /// let nsecs = env.block.time.nanos() % 1_000_000_000;
  + /// let seconds = env.block.time.seconds();
  + /// let nsecs = env.block.time.subsec_nanos();
  /// let dt = NaiveDateTime::from_timestamp(seconds as i64, nsecs as u32);
  /// ```
  ///
  