feat: improve worksheet

src/export/typst/payload.rs

@@ -662,11 +662,7 @@ fn calibration(item: &Item) -> Option<BTreeMap<String, f64>> {
 
 /// The token for a response format.
 fn format_token(format: Format) -> &'static str {
-    match format {
-        Format::SingleBestAnswer => "single_best_answer",
-        Format::MultipleResponse => "multiple_response",
-        Format::TrueFalse => "true_false",
-    }
+    format.as_str()
 }
 
 /// The token for an administration platform.