update manual steps

Author: ethanpalm

guides/migration.mdx

@@ -153,10 +153,14 @@ To migrate your content to Mintlify, you will need:
 - An `MDX` file for each page of your documentation. See [Pages](/pages) for more information.
 - (Optional) An OpenAPI specification for your API endpoint pages. See [OpenAPI setup](/api-playground/openapi-setup) for more information.
 
+1. If your content is already in `MDX` format, copy the pages to your Mintlify project. Otherwise, convert your content to `MDX` format.
+2. Create your `docs.json` referencing the paths to your `MDX` pages.
+3. If you have OpenAPI specifications, add them to your `docs.json` and configure the API playground.
+
 ### Asset migration
 
-1. **Copy assets** to your repository's `images/` directory.
-2. **Update references** in your MDX files:
+1. Copy assets to your repository's `images/` directory.
+2. Update references in your `MDX` files:
    ```mdx
    ![Alt text](/images/screenshot.png)
    ```