docs(fix): error code link in examples

Author: wenfengwang

docs/pages/examples.mdx

@@ -9,13 +9,13 @@ import { FeatureRequest } from '@components/feature-request';
 
 <YouTubeComponent videoId={'F_Bh30eMdFo'}></YouTubeComponent>
 
-**Code**: https://github.com/npi-ai/npi/examples/calendar_negotiator/main.py
+**Code**: https://github.com/npi-ai/npi/tree/main/examples/calendar_negotiator/main.py
 
 ## X.com collaboration with Discord
 
 <YouTubeComponent videoId={'Cy4dXc7pnvE'}></YouTubeComponent>
 
-**Code**: https://github.com/npi-ai/npi/examples/twitter_crawler/main.py
+**Code**: https://github.com/npi-ai/npi/tree/main/examples/twitter_crawler/main.py
 
 
 ## X.com Crawler