chore: add a comma for prefix concerts arr (#12776)

contributors.yml

@@ -209,6 +209,7 @@
 - MichaelDeBoey
 - michal-antczak
 - miguelvictor
+- MihailProcudin
 - mikib0
 - minami-minami
 - minthulim

docs/index.md

@@ -78,7 +78,7 @@ export default [
   ...prefix("concerts", [
     index("./concerts/home.tsx"),
     route(":city", "./concerts/city.tsx"),
-    route(":city/:id", "./concerts/show.tsx")
+    route(":city/:id", "./concerts/show.tsx"),
     route("trending", "./concerts/trending.tsx"),
   ]),
 ] satisfies RouteConfig;