Apply suggestions from code review

Author: khvn26

api/webhooks/webhooks.py

@@ -153,7 +153,7 @@ def _call_webhook(
     headers = {"content-type": "application/json"}
     json_data = json.dumps(data, sort_keys=True, cls=DjangoJSONEncoder)
     if webhook.secret:
-        # TestWebHook on the frontend replicates this exact function, change the
+        # signPayload of frontend/web/components/TestWebHook on the frontend replicates this exact function, change the
         # function there if this changes.
         signature = sign_payload(json_data, key=webhook.secret)
         headers.update({FLAGSMITH_SIGNATURE_HEADER: signature})
@@ -201,7 +201,7 @@ def call_webhook_with_failure_mail_after_retries(
     headers = {"content-type": "application/json"}
     json_data = json.dumps(data, sort_keys=True, cls=DjangoJSONEncoder)
     if webhook.secret:
-        # TestWebHook on the frontend replicates this exact function, change the
+        # signPayload of frontend/web/components/TestWebHook on the frontend replicates this exact function, change the
         # function there if this changes.
         signature = sign_payload(json_data, key=webhook.secret)
         headers.update({FLAGSMITH_SIGNATURE_HEADER: signature})