Update settings for prod environment

docs/import-prod-data-heroku.md

@@ -60,6 +60,6 @@ python manage.py shell
 Import the nuke_user script, run it
 
 ```python
-import nuke_users from nuke_users
+from nuke_users import nuke_users
 nuke_users()
 ```

server/core/settings.py

@@ -197,7 +197,7 @@ GERMAN = ("de", _("German"))
 ENGLISH = ("en", _("English"))
 FRENCH = ("fr", _("French"))
 
-if PLATFORM in ["my-kv", "my-dhf", "my-dha"]:
+if PLATFORM in ["my-kv"]:
     WAGTAIL_I18N_ENABLED = True
     WAGTAIL_CONTENT_LANGUAGES = LANGUAGES = [
         GERMAN,