remove list of list etc

src/paragraph/parser/liste.rs

@@ -63,6 +63,10 @@ impl Liste {
     }
 
     pub(crate) fn get_content(&self) -> Content {
-        Content::List(self.content.clone())
+        if self.content.len() == 1 {
+            self.content[0].clone()
+        } else {
+            Content::List(self.content.clone())
+        }
     }
 }