Update several domains (#3851)

* README: fix typo

* azure: add azureedge.us

* add copilot-stg.com to bing/category-ai-!cn

* manhuagui: add mhgui.com

* spacex: add starlink.com

* tesla: remove dead domains

data/category-ai-!cn

@@ -27,6 +27,7 @@ cohere.ai
 cohere.com
 
 # Copilot
+copilot-stg.com
 copilot.cloud.microsoft
 copilot.com
 copilot.microsoft.com