Update dependencies in README

Co-authored-by: Andy Chosak <andy.chosak@cfpb.gov>

README.md

@@ -23,6 +23,7 @@ Wagtail-TreeModelAdmin is an extension for Wagtail's [ModelAdmin](http://docs.wa
 - Python 3.8+
 - Django 3.2 (LTS), 4.1 (current)
 - Wagtail 5.1+
+- [wagtail-modeladmin](https://github.com/wagtail-nest/wagtail-modeladmin)
 
 It should be compatible with all intermediate versions, as well.
 If you find that it is not, please [file an issue](https://github.com/cfpb/wagtail-treemodeladmin/issues/new).
@@ -35,12 +36,12 @@ If you find that it is not, please [file an issue](https://github.com/cfpb/wagta
 pip install wagtail-treemodeladmin
 ```
 
-2. Add `treemodeladmin` (and `wagtail.contrib.modeladmin` if it's not already) as an installed app in your Django `settings.py`:
+2. Add `treemodeladmin` (and `wagtail_modeladmin` if it's not already) as an installed app in your Django `settings.py`:
 
  ```python
  INSTALLED_APPS = (
      ...
-     'wagtail.contrib.modeladmin',
+     'wagtail_modeladmin',
      'treemodeladmin',
      ...
  )