Update CONTRIBUTING.md

CONTRIBUTING.md

@@ -195,14 +195,14 @@ STREAM_URL
 Example:
 
 ```xml
-#EXTINF:-1 tvg-id="example.ua" tvg-name="Example TV" tvg-country="" tvg-language="Ukrainian;Russian" tvg-logo="https://i.imgur.com/bu12f89.png" group-title="Kids",Example TV +3 (Пример ТВ) (720p) [not 24/7]
+#EXTINF:-1 tvg-id="example.ua" tvg-name="Example TV" tvg-country="UA" tvg-language="Ukrainian;Russian" tvg-logo="https://i.imgur.com/bu12f89.png" group-title="Kids",Example TV +3 (Пример ТВ) (720p) [not 24/7]
 https://example.com/playlist.m3u8
 ```
 
 Also, if necessary, you can specify custom HTTP User-Agent or Referrer via the `#EXTVLCOPT` tag:
 
 ```xml
-#EXTINF:-1 tvg-id="exampletv.us" tvg-name="Example TV" tvg-country="" tvg-language="English" tvg-logo="http://example.com/channel-logo.png" group-title="News",Example TV
+#EXTINF:-1 tvg-id="exampletv.us" tvg-name="Example TV" tvg-country="US" tvg-language="English" tvg-logo="http://example.com/channel-logo.png" group-title="News",Example TV
 #EXTVLCOPT:http-referrer=http://example.com/
 #EXTVLCOPT:http-user-agent=Mozilla/5.0 (Windows NT 10.0; Win64; x64)
 http://example.com/stream.m3u8