Fix footnote reference type.

src/compare/diff.rs

@@ -54,6 +54,7 @@ use crate::types::ExportSnippet;
 use crate::types::FixedWidthArea;
 use crate::types::FootnoteDefinition;
 use crate::types::FootnoteReference;
+use crate::types::FootnoteReferenceType;
 use crate::types::GetStandardProperties;
 use crate::types::Heading;
 use crate::types::HorizontalRule;
@@ -3323,7 +3324,10 @@ fn compare_footnote_reference<'b, 's>(
         ),
         (
             EmacsField::Required(":type"),
-            |_| Some("inline"),
+            |r| Some(match r.get_type() {
+                FootnoteReferenceType::Standard => "standard",
+                FootnoteReferenceType::Inline => "inline",
+            }),
             compare_property_unquoted_atom
         )
     )? {