Replace hardcoded default route suffix with configurable option

Developed by: Social Deal (@socialdeal)

Co-authored-by: Dotwood Media <info@dotwood.media>

src/routing.ts

@@ -175,7 +175,7 @@ export function localizeRoutes(routes: NuxtPage[], options: LocalizeRoutesParams
         ) {
           localizedRoutes.push({
             ...localized,
-            name: `${localized.name}___default`
+            name: `${localized.name}___${options.defaultLocaleRouteNameSuffix}`
           })
         }