[css-color-adjust-1] Move and rephrase the talking point about MQs to the intro.

Author: tabatkins

css-color-adjust-1/Overview.bs

@@ -44,6 +44,10 @@ Introduction {#intro}
 		to automatically adjust colors to the user's assumed performance preferences,
 		such as suppressing background colors when printing to save ink.
 
+	Together with the 'prefers-color-scheme', 'prefers-contrast', and 'forced-colors' [=media queries=] [[!MEDIAQUERIES-5]],
+	this module allows color scheme negotiation
+	between the author and the user.
+
 
 Value Definitions {#values}
 ---------------------------