refactor(clippy): consistent style

Signed-off-by: Christina Sørensen <christina@cafkafk.com>

src/theme/mod.rs

@@ -194,7 +194,7 @@ impl ExtensionMappings {
     }
 
     fn add(&mut self, pattern: glob::Pattern, style: Style) {
-        self.mappings.push((pattern, style))
+        self.mappings.push((pattern, style));
     }
 }