Fix docs

Signed-off-by: Denis Varlakov <[email protected]>

udigest/src/lib.rs

@@ -203,7 +203,7 @@ pub use encoding::Buffer;
 ///
 ///   When structure is digested, the hash map is converted into btree map. `_` in `BTreeMap<_, udigest::Bytes>`
 ///   says that the key should be kept as it is: `String` string will be digested. The macro
-///   replaces underscores (also called "infer types") with [`udigest::as_::Same`], which
+///   replaces underscores (also called "infer types") with [`Same`](crate::as_::Same), which
 ///   indicates that the same digestion rules should be used as for the original type.
 ///   `udigest::Bytes` indicates that the value `Vec<u8>` should be digested as bytes, not as
 ///   list of u8 which would be a default behavior.