cross_toml: Update module docs.

src/cross_toml.rs

@@ -1,3 +1,10 @@
+//! The `Cross.toml` configuration file.
+//!
+//! For a detailed user documentation of the file and the contents please refer to the [docs in the
+//! repo][1].
+//!
+//! [1]: https://github.com/cross-rs/cross/blob/main/docs/config_file.md
+
 use crate::docker::custom::PreBuild;
 use crate::docker::PossibleImage;
 use crate::shell::MessageInfo;

src/lib.rs

@@ -34,7 +34,7 @@ mod tests;
 pub mod cargo;
 pub mod cli;
 pub mod config;
-mod cross_toml;
+pub mod cross_toml;
 pub mod docker;
 pub mod errors;
 mod extensions;