[AstroJS] Keystatic doesn't show files from Content Collection

I have AstroJS project, and I added Keystatic.

I have several pages in src/content folder, and it works in Astro:

File src/content/config.ts:

import { z, defineCollection } from "astro:content";

const docsCollection = defineCollection({
    type: "content",
    schema: z.object({
        title: z.string(),
    }),
});

export const collections = {
    docs: docsCollection,
};

File keystatic.config.ts:

import { config, fields, collection } from "@keystatic/core";

export default config({
    storage: {
        kind: "local",
    },
    collections: {
        docs: collection({
            label: "Documents",
            slugField: "title",
            path: "src/content/docs/*",
            format: { contentField: "content" },
            schema: {
                title: fields.slug({ name: { label: "Title" } }),
                content: fields.document({
                    label: "Content",
                    formatting: true,
                    dividers: true,
                    links: true,
                    images: true,
                }),
            },
        }),
    },
});

Example of mdoc file: src/content/docs/en/about.mdoc

---
title: "About website"
---

# About website

## Website Feedback

I go to my Keystatic admin.

What I see: No results No items matching "" were found.

What I expected to see: the list of my mdoc files form existing AstroJS project.

Node 18.17.0
MacOS Catalina

"dependencies": {
"@astrojs/markdoc": "^0.4.4",
"@astrojs/node": "^5.3.2",
"@astrojs/react": "^2.2.1",
"@keystatic/astro": "^0.0.8",
"@keystatic/core": "^0.0.114",
"@types/react": "^18.2.18",
"@types/react-dom": "^18.2.7",
"accept-language": "^3.0.18",
"astro": "^2.10.3",
"react": "^18.2.0",
"react-dom": "^18.2.0"
}

Start by comparing the collection path and schema in keystatic.config.ts with the existing src/content/config.ts and the example src/content/docs/en/about.mdoc file. Check the Keystatic admin entry point for how it discovers matching files; done means the existing mdoc files appear in the Documents collection without breaking Astro content loading.