fix webhook doc

docs/features/webhook.mdx

@@ -121,17 +121,14 @@ Modify an existing webhook's configuration. Remember that webhooks can only be u
 ```python Python
 # Update webhook in default project
 updated_webhook = client.update_webhook(
-    webhook_id="wh_123",
     name="Updated Logger",
     url="https://your-app.com/new-webhook"
 )
 
 # Or update in a specific project
 updated_webhook = client.update_webhook(
-    webhook_id="wh_123",
     name="Updated Logger",
-    url="https://your-app.com/new-webhook",
-    project_id="proj_123"
+    url="https://your-app.com/new-webhook"
 )
 print(updated_webhook)
 ```