Cleaned up confusing sentence
//!
//! ## Declaring your schema
//!
-//! So Diesel is able to validate your queries at compile time,
+//! For Diesel to validate your queries at compile time
//! it requires you to specify your schema in your code,
//! which you can do with [the `table!` macro][`table!`].
//! `diesel print-schema` or `infer_schema!` can be used
