Add new help text to migrations

wagtail/core/migrations/0047_add_workflow_models.py

@@ -1,4 +1,4 @@
-# Generated by Django 3.0.3 on 2020-02-21 14:11
+# Generated by Django 3.0.3 on 2020-03-03 15:26
 
 from django.conf import settings
 from django.db import migrations, models
@@ -125,6 +125,6 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name='groupapprovaltask',
             name='groups',
-            field=models.ManyToManyField(to='auth.Group', verbose_name='groups'),
+            field=models.ManyToManyField(help_text='Pages at this step in a workflow will be moderated or approved by these groups of users', to='auth.Group', verbose_name='groups'),
         ),
     ]