[css-2026] Add macOS UTI public.css, #5310

Author: svgeesus

css-2026/Overview.bs

@@ -1050,7 +1050,7 @@ Additional information:
 	Deprecated alias names for this type: N/A
 	Magic number(s): N/A
 	File extension(s): .css
-	macOS Uniform Type Identifier(s): N/A
+	macOS Uniform Type Identifier(s): public.css
 	Windows clipboard name(s): N/A
 
 Person & email address to contact for further information: