Fixed docs link.
//! pest is a [PEG](https://en.wikipedia.org/wiki/Parsing_expression_grammar) parser built with
//! *simplicity* and *speed* in mind.
//!
-//! This crate works in conjunction with the [`pest` crate](https://docs.rs/pest_derive) by
+//! This crate works in conjunction with the [`pest` crate](https://docs.rs/pest) by
//! deriving a grammar implementation based on a provided grammar.
//!
//! ## `.pest` files
