Fix clippy issues.

src/intermediate/plain_list_item.rs

@@ -29,11 +29,11 @@ intermediate!(
             let mut ret = Vec::new();
 
             // Special case for list items with only paragraphs and sublists as their children. In those cases, the paragraph tags are omitted.
-            let is_simple_list_item = original.children.iter().all(|child| match child {
-                organic::types::Element::Paragraph(_) | organic::types::Element::PlainList(_) => {
-                    true
-                }
-                _ => false,
+            let is_simple_list_item = original.children.iter().all(|child| {
+                matches!(
+                    child,
+                    organic::types::Element::Paragraph(_) | organic::types::Element::PlainList(_)
+                )
             });
             if is_simple_list_item {
                 for elem in original.children.iter() {