fix: use joinSegments for `contentIndex.json` file path (#702)

kabirgh

2024-01-16 e17ff202449635af29ef0056886e472a2615708b

 index.d.ts

@@ -5,7 +5,7 @@

// dom custom event
interface CustomEventMap {
  nav: CustomEvent<{ url: CanonicalSlug }>
  nav: CustomEvent<{ url: FullSlug }>
}

declare const fetchData: Promise<ContentIndex>