Fix the examples in docs
//! # Examples
//! ### The ping-pong bot
//!
-//! ```
+//! ```no_run
//! # #[tokio::main]
//! # async fn main_() {
//! use teloxide::prelude::*;
//!
//! // Create a dispatcher with a single message handler that answers "pong"
//! // to each incoming message.
-//! Dispatcher::<RequestError>::new(Bot::new("MyAwesomeToken"))
+//! Dispatcher::<RequestError>::new(Bot::from_env())
//! .message_handler(&|ctx: DispatcherHandlerCtx<Message>| async move {
//! ctx.answer("pong").send().await?;
//! Ok(())
//!
//! ### Multiple handlers
//!
-//! ```
+//! ```no_run
//! # #[tokio::main]
//! # async fn main_() {
//! use teloxide::prelude::*;
//!
//! // Create a dispatcher with multiple handlers of different types. This will
//! // print One! and Two! on every incoming UpdateKind::Message.
-//! Dispatcher::<RequestError>::new(Bot::new("MyAwesomeToken"))
+//! Dispatcher::<RequestError>::new(Bot::from_env())
//! // This is the first UpdateKind::Message handler, which will be called
//! // after the Update handler below.
//! .message_handler(&|ctx: DispatcherHandlerCtx<Message>| async move {
