webhooks: Rename Yo App to Yo.

Signed-off-by: Anders Kaseorg <anders@zulip.com>

zerver/lib/integrations.py

@@ -459,7 +459,7 @@ WEBHOOK_INTEGRATIONS: List[WebhookIntegration] = [
         "yo",
         ["communication"],
         function="zerver.webhooks.yo.view.api_yo_app_webhook",
-        display_name="Yo App",
+        display_name="Yo",
     ),
     WebhookIntegration("wordpress", ["marketing"], display_name="WordPress"),
     WebhookIntegration("zapier", ["meta-integration"]),

zerver/webhooks/yo/doc.md

@@ -1,4 +1,4 @@
-See your Yo App notifications in Zulip!
+See your Yo notifications in Zulip!
 
 1.  First, on your {{ settings_html|safe }}, create a bot for
     {{ integration_display_name }}. Construct the URL for the

zerver/webhooks/yo/tests.py

@@ -11,7 +11,7 @@ class YoHookTests(WebhookTestCase):
 
     def test_yo_message(self) -> None:
         """
-        Yo App sends notification whenever user receives a new Yo from another user.
+        Yo sends notification whenever user receives a new Yo from another user.
         """
         cordelia = self.example_user("cordelia")
         self.url = self.build_webhook_url(