docs(hardlink): update Aware::record doc to mention device number

https://claude.ai/code/session_01QP9wZyoZcGmJsEsA66ZRok

Author: claude

src/hardlink/aware.rs

@@ -21,7 +21,7 @@ use std::{convert::Infallible, fmt::Debug, os::unix::fs::MetadataExt, path::Path
 /// accurately reflect the real size of their containers.
 #[derive(Debug, SmartDefault, Clone, AsRef, AsMut, From, Into)]
 pub struct Aware<Size> {
-    /// Map an inode number to its size and detected paths.
+    /// Map an inode number and device number to its size and detected paths.
     record: HardlinkList<Size>,
 }