Fix wrong language code for GB (home-assistant#3041)

CharlesBlonde · fabaff · commit e1037b7df818 · 2017-07-23T16:40:06.000+02:00
I made a mistake in the initial documentation: for UK users, the language code has to be `GB` and not `UK` https://community.home-assistant.io/t/dyson-component-not-working/21807
diff --git a/source/_components/dyson.markdown b/source/_components/dyson.markdown
@@ -36,7 +36,7 @@ Configuration variables:
 
 - **username** (*Required*): Dyson account username (email address)
 - **password** (*Required*): Dyson account password
-- **language** (*Required*): Dyson account language country code. Known working codes: `FR`, `NL`, `UK`, `AU`. But others codes should work.
+- **language** (*Required*): Dyson account language country code. Known working codes: `FR`, `NL`, `GB`, `AU`. But others codes should work.
 - **devices** (*Optional*): List of devices
   - **device_id** (*Required*): Device ID. Available in the mobiles applications (*Settings* page)
   - **device_ip** (*Required*): Device IP address
