Update comments

Author: garethj2

src/haystack/encoding/decode_ref_dis_factory.rs

@@ -6,10 +6,10 @@ use std::sync::RwLock;
 /// Enables display values to be injected into decoded Ref objects.
 ///
 /// This is used to handle the case whereby pre-calculated display
-/// names for Refs need to be utilized when encoding/decoding haystack data.
+/// names for Refs need to be utilized when decoding haystack data.
 ///
 /// Please note, the return type is a `Cow<str>`. At some point we'll make `Ref` a little
-/// more flexible regarding how it holds its display data and hence its usage.
+/// more flexible regarding how it holds its display data.
 type RefDisFactoryFunc<'a> = Box<dyn Fn(&str, Option<&str>) -> Option<Cow<'a, str>> + Send + Sync>;
 
 /// Holds the Ref factory function used for creating Refs.