Update appcast file location

Author: intitni

Config.xcconfig

@@ -3,7 +3,7 @@ SLASH = /
 
 HOST_APP_NAME = Copilot for Xcode
 BUNDLE_IDENTIFIER_BASE = com.intii.CopilotForXcode
-SPARKLE_FEED_URL = https:$(SLASH)$(SLASH)raw.githubusercontent.com/intitni/CopilotForXcode/main/appcast.xml
+SPARKLE_FEED_URL = https:$(SLASH)$(SLASH)copilotforxcode.intii.com/appcast.xml
 SPARKLE_PUBLIC_KEY = WDzm5GHnc6c8kjeJEgX5GuGiPpW6Lc/ovGjLnrrZvPY=
 APPLICATION_SUPPORT_FOLDER = com.intii.CopilotForXcode
 EXTENSION_BUNDLE_NAME = Copilot