Run cargo fix.

src/context/citation.rs

@@ -13,10 +13,10 @@ pub(crate) struct RenderCitation {}
 
 impl RenderCitation {
     pub(crate) fn new(
-        config: &Config,
-        output_directory: &Path,
-        output_file: &Path,
-        comment: &ICitation,
+        _config: &Config,
+        _output_directory: &Path,
+        _output_file: &Path,
+        _comment: &ICitation,
     ) -> Result<RenderCitation, CustomError> {
         Ok(RenderCitation {})
     }