Update app.py

app.py

@@ -15,7 +15,7 @@ class YouTubeDownloader:
                 file_ = YouTubeDownloader.download_video(url)
                 st.video(file_)
                 YouTubeDownloader.helper_message()
-        st.markdown("https://github.com/HelpingAI))")
+        st.markdown("예) https://www.youtube.com/watch?v=hXpNj1ChxRI ")
 
 
     @staticmethod