docs: update nested collection docs

package.json

@@ -7,7 +7,7 @@
     "build:docs": "cd packages/docs && yarn build",
     "dev": "lerna run dev --scope @staticcms/core",
     "demo": "lerna run dev --scope @staticcms/demo",
-    "docs": "lerna run dev --scope docs",
+    "docs": "lerna run dev --scope @staticcms/docs",
     "format": "lerna run format",
     "lint": "lerna run lint",
     "prepare": "husky install",

packages/docs/content/docs/collection-types.mdx

@@ -294,7 +294,89 @@ Supports all of the [`slug` templates](/docs/configuration-options#slug) and:
 
 ### Nested Collections <img src="https://img.shields.io/badge/-Beta%20Feature-blue" alt="Beta Feature. Use at your own risk" title="Beta Feature. Use at your own risk" />
 
-[Nested collections](/docs/beta-features/#nested-collections) is a beta feature that allows a folder collection to show a nested structure of entries and edit the locations of the entries. This feature is useful when you have a complex folder structure and may not want to create separate collections for every directory. As it is in beta, please use with discretion.
+Nested collections is a beta feature that allows a folder collection to show a nested structure of entries and edit the locations of the entries. This feature is useful when you have a complex folder structure and may not want to create separate collections for every directory. As it is in beta, please use with discretion.
+
+Example configuration:
+
+<CodeTabs>
+
+```yaml
+collections:
+  - name: pages
+    label: Pages
+    label_singular: 'Page'
+    folder: content/pages
+    create: true
+    # adding a nested object will show the collection folder structure
+    nested:
+      depth: 100 # max depth to show in the collection tree
+      summary: '{{title}}' # optional summary for a tree node, defaults to the inferred title field
+    fields:
+      - label: Title
+        name: title
+        widget: string
+      - label: Body
+        name: body
+        widget: markdown
+    # adding a meta object with a path property allows editing the path of entries
+    # moving an existing entry will move the entire sub tree of the entry to the new location
+    meta: { path: { widget: string, label: 'Path', index_file: 'index' } }
+```
+
+```js
+{
+  "collections": [
+    {
+      "name": "pages",
+      "label": "Pages",
+      "label_singular": "Page",
+      "folder": "content/pages",
+      "create": true,
+      "nested": {
+        "depth": 100,
+        "summary": "{{title}}"
+      },
+      "fields": [
+        {
+          "label": "Title",
+          "name": "title",
+          "widget": "string"
+        },
+        {
+          "label": "Body",
+          "name": "body",
+          "widget": "markdown"
+        }
+      ],
+      "meta": {
+        "path": {
+          "widget": "string",
+          "label": "Path",
+          "index_file": "index"
+        }
+      }
+    }
+  ]
+}
+```
+
+</CodeTabs>
+
+Nested collections expect the following directory structure:
+
+```bash
+content
+└── pages
+    ├── authors
+    │   ├── author-1
+    │   │   └── index.md
+    │   └── index.md
+    ├── index.md
+    └── posts
+        ├── hello-world
+        │   └── index.md
+        └── index.md
+```
 
 ## File Collections