[css-color-adjust-1] Remove duplicate heading. w3c#5357

Author: fantasai

css-color-adjust-1/Overview.bs

@@ -266,7 +266,7 @@ Effects of the Used Color Scheme {#color-scheme-effect}
 	(such as <{img}> elements embedding an SVG document).
 
 
-Forced Color Schemes: the 'forced-color-adjust' property {#forced}
+Forced Color Schemes {#forced}
 ====================
 
 	<dfn export>Forced colors mode</dfn> is an accessibility feature