chore: fix lint

Author: alexander-akait

lib/Server.js

@@ -1478,9 +1478,7 @@ class Server {
     } else if (typeof options.static === "string") {
       options.static = [getStaticItem(options.static)];
     } else if (Array.isArray(options.static)) {
-      options.static = options.static.map((item) => {
-        return getStaticItem(item);
-      });
+      options.static = options.static.map((item) => getStaticItem(item));
     } else {
       options.static = [getStaticItem(options.static)];
     }