RIOT/doc/starlight/src/content.config.ts

import { defineCollection } from "astro:content";
import { glob } from "astro/loaders";
import { docsSchema } from "@astrojs/starlight/schema";

export const collections = {
  docs: defineCollection({
    loader: glob({ pattern: "**/*.(md|mdx)", base: "../guides" }),
    schema: docsSchema(),
  }),
};