docs: update migration page

docs/content/en/03.more/04.migration.md

@@ -22,6 +22,10 @@ By migrating to docus, you will have a fresh new design for your documentation 
   </div>
 </div>
 
+## Steps
+
+### `package.json`
+
 In order to move from `@nuxt/content-theme-docs` to `docus` you need to install the new package:
 
 <code-group>
@@ -41,6 +45,8 @@ npm uninstall @nuxt/content-theme-docs && npm install docus
 </code-block>
 </code-group>
 
+### `nuxt.config.js`
+
 Then, instead of importing `@nuxt/content-theme-docs`, you need to import `docus` in your `nuxt.config.js`:
 
 <code-group>
@@ -101,4 +107,38 @@ export default theme({
 </code-block>
 </code-group>
 
-You can now redeploy your application to take advantage of `docus` and its new features!
+### `content/settings.json`
+
+If you specified `githubApi`, `defaultBranch` or `defaultDir` in `content/settings.json`, you need to change those keys following the [Configuration](/usage/configuration) documentation.
+
+The `github` key can now be a `String` to act as `github.repo` or an object with `repo`, `branch`, `dir`, `url` and `apiUrl` keys:
+
+<code-group>
+  <code-block label="New" active>
+
+```json
+{
+  "github": {
+    "repo": "nuxtlabs/docus",
+    "branch": "main",
+    "dir": "docs"
+  }
+}
+```
+
+</code-block>
+<code-block label="Old">
+
+```json
+{
+  "github": "nuxtlabs/docus",
+  "defaultBranch": "main",
+  "defaultDir": "docs"
+}
+```
+
+</code-block>
+</code-group>
+
+
+🎉 Congrats, you can now redeploy your application to take advantage of `docus` and its new features!