1 files changed, 7 insertions, 3 deletions
diff --git a/docs/internals/contributing/writing-code/unit-tests.txt b/docs/internals/contributing/writing-code/unit-tests.txt
index 8789e0ef7b..40fb2ec221 100644
--- a/docs/internals/contributing/writing-code/unit-tests.txt
+++ b/docs/internals/contributing/writing-code/unit-tests.txt
@@ -537,11 +537,13 @@ a temporary ``Apps`` instance. To do this, use the
     from django.test import SimpleTestCase
     from django.test.utils import isolate_apps
 
+
     class TestModelDefinition(SimpleTestCase):
-        @isolate_apps('app_label')
+        @isolate_apps("app_label")
         def test_model_definition(self):
             class TestModel(models.Model):
                 pass
+
             ...
 
 .. admonition:: Setting ``app_label``
@@ -561,8 +563,9 @@ a temporary ``Apps`` instance. To do this, use the
         from django.test import SimpleTestCase
         from django.test.utils import isolate_apps
 
+
         class TestModelDefinition(SimpleTestCase):
-            @isolate_apps('app_label', 'other_app_label')
+            @isolate_apps("app_label", "other_app_label")
             def test_model_definition(self):
                 # This model automatically receives app_label='app_label'
                 class TestModel(models.Model):
@@ -570,5 +573,6 @@ a temporary ``Apps`` instance. To do this, use the
 
                 class OtherAppModel(models.Model):
                     class Meta:
-                        app_label = 'other_app_label'
+                        app_label = "other_app_label"
+
                 ...