chore: Fix several style lints (#17488)

It's not comprehensive enough to start linting on `style` group, but
hey, it's a start.

Release Notes:

- N/A

crates/html_to_markdown/src/structure/wikipedia.rs

@@ -54,13 +54,8 @@ impl HandleTag for WikipediaInfoboxHandler {
         tag: &HtmlElement,
         _writer: &mut MarkdownWriter,
     ) -> StartTagOutcome {
-        match tag.tag() {
-            "table" => {
-                if tag.has_class("infobox") {
-                    return StartTagOutcome::Skip;
-                }
-            }
-            _ => {}
+        if tag.tag() == "table" && tag.has_class("infobox") {
+            return StartTagOutcome::Skip;
         }
 
         StartTagOutcome::Continue
@@ -77,12 +72,15 @@ impl WikipediaCodeHandler {
     }
 }
 
+impl Default for WikipediaCodeHandler {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl HandleTag for WikipediaCodeHandler {
     fn should_handle(&self, tag: &str) -> bool {
-        match tag {
-            "div" | "pre" | "code" => true,
-            _ => false,
-        }
+        matches!(tag, "div" | "pre" | "code")
     }
 
     fn handle_tag_start(
@@ -134,7 +132,7 @@ impl HandleTag for WikipediaCodeHandler {
 
     fn handle_text(&mut self, text: &str, writer: &mut MarkdownWriter) -> HandlerOutcome {
         if writer.is_inside("pre") {
-            writer.push_str(&text);
+            writer.push_str(text);
             return HandlerOutcome::Handled;
         }