Update an example in `src/dispatching2/mod.rs`
//! ```no_run
//! use std::sync::atomic::{AtomicU64, Ordering};
//!
-//! use lazy_static::lazy_static;
+//! use once_cell::sync::Lazy;
//! use teloxide::prelude2::*;
//!
-//! lazy_static! {
-//! static ref MESSAGES_TOTAL: AtomicU64 = AtomicU64::new(0);
-//! }
+//! static MESSAGES_TOTAL: Lazy<AtomicU64> = Lazy::new(AtomicU64::default);
//!
//! # #[tokio::main]
//! # async fn main() {
