Revert "ref: fix a small typo (#40128)"

This reverts commit e07587eb51be1326761390d902b9be925ad04970.

Co-authored-by: asottile-sentry <103459774+asottile-sentry@users.noreply.github.com>

src/sentry/mail/notifications.py

@@ -159,7 +159,7 @@ def get_builder_args_from_context(
         "reference": notification.reference,
         "type": notification.metrics_key,
     }
-    # add in optional fields
+    # add in optinal fields
     from_email = notification.from_email
     if from_email:
         output["from_email"] = from_email