Fix documentation format

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "redsync"
-version = "0.1.1"
+version = "0.1.2"
 authors = ["jace-ys <[email protected]>"]
 edition = "2018"
 description = "A Rust implementation of Redlock for distributed locks with Redis"

README.md

@@ -13,7 +13,7 @@ Add the following line to your Cargo.toml file:
 
 ```toml
 [dependencies]
-redsync = "0.1.1"
+redsync = "0.1.2"
 ```
 
 ## Documentation

src/lib.rs

@@ -1,14 +1,15 @@
 //! # Installation
 //!
 //! Add the following line to your Cargo.toml file:
-//! ```
+//!
+//! ```toml
 //! [dependencies]
-//! redsync = "0.1.1"
+//! redsync = "0.1.2"
 //! ```
 //!
 //! # Quick Start
 //!
-//! ```
+//! ```rust
 //! use std::error::Error;
 //! use std::time::Duration;
 //! use redsync::{RedisInstance, Redsync};