fix example code

peach-stats/src/lib.rs

@@ -16,15 +16,15 @@
 //! ## Example Usage
 //!
 //! ```rust
-//! use peach_stats::StatsError;
+//! use peach_stats::{stats, StatsError};
 //!
 //! fn main() -> Result<(), StatsError> {
-//!     let cpu = peach_stats::cpu_stats()?;
-//!     let cpu_percentages = peach_stats::cpu_stats_percent()?;
-//!     let disks = peach_stats::disk_usage()?;
-//!     let load = peach_stats::load_average()?;
-//!     let mem = peach_stats::mem_stats()?;
-//!     let uptime = peach_stats::uptime()?;
+//!     let cpu = stats::cpu_stats()?;
+//!     let cpu_percentages = stats::cpu_stats_percent()?;
+//!     let disks = stats::disk_usage()?;
+//!     let load = stats::load_average()?;
+//!     let mem = stats::mem_stats()?;
+//!     let uptime = stats::uptime()?;
 //!
 //!     Ok(())
 //! }