meta: rework Rustdoc

Signed-off-by: Daniel Maslowski <info@orangecms.org>

Author: orangecms

src/meta.rs

@@ -1,4 +1,6 @@
-//! Adapted from me_cleaner, a map of key hashes => metadata (variant + version).
+//! Map of key hashes => metadata (variant + version)
+//!
+//! This has been adapted from me_cleaner.
 
 use std::fmt::Display;