Fix copy issues on model fields (#9170)

* Fix copy issues on model fields

The term "domain" is not a proper noun and should not use proper
capitalization. We do this in a number of places, as we are generally
referring to the underlying model, but this shouldn't be how these terms
are communicated to users.

I didn't touch the actual copy otherwise, even though we could probably
make these descriptions a bit clearer. We could also do that more
immediately if it makes sense.

* Add migration

* Reformat

Author: agjohnson

readthedocs/projects/migrations/0088_domain_field_edits.py

@@ -0,0 +1,35 @@
+# Generated by Django 3.2.12 on 2022-05-05 17:29
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("projects", "0087_use_booleanfield_null"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="domain",
+            name="canonical",
+            field=models.BooleanField(
+                default=False,
+                help_text="This domain is the primary one where the documentation is served from",
+            ),
+        ),
+        migrations.AlterField(
+            model_name="domain",
+            name="cname",
+            field=models.BooleanField(
+                default=False, help_text="This domain is a CNAME for the project"
+            ),
+        ),
+        migrations.AlterField(
+            model_name="domain",
+            name="machine",
+            field=models.BooleanField(
+                default=False, help_text="This domain was auto-created"
+            ),
+        ),
+    ]

readthedocs/projects/models.py

@@ -1615,17 +1615,16 @@ class Domain(TimeStampedModel, models.Model):
     )
     machine = models.BooleanField(
         default=False,
-        help_text=_('This Domain was auto-created'),
+        help_text=_("This domain was auto-created"),
     )
     cname = models.BooleanField(
         default=False,
-        help_text=_('This Domain is a CNAME for the project'),
+        help_text=_("This domain is a CNAME for the project"),
     )
     canonical = models.BooleanField(
         default=False,
         help_text=_(
-            'This Domain is the primary one where the documentation is '
-            'served from',
+            "This domain is the primary one where the documentation is " "served from",
         ),
     )
     https = models.BooleanField(