Built new error module to hold document name.

src/name.rs

@@ -1,6 +1,6 @@
 use crate::mtterror::MTTError;
 use isolang::Language;
-use std::collections::HashMap;
+use std::{collections::HashMap, fmt};
 use uuid::Uuid;
 
 #[derive(Clone, Debug, Eq, Hash, PartialEq)]
@@ -69,9 +69,9 @@ impl Name {
     }
 }
 
-impl ToString for Name {
-    fn to_string(&self) -> String {
-        self.name.clone()
+impl fmt::Display for Name {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "{}", self.name)
     }
 }