[css-color-adjust-1] possible typo

Author: himorin

css-color-adjust-1/Overview.bs

@@ -273,7 +273,7 @@ Forced Color Schemes {#forced}
 	intended to increase the readability of text through color contrast.
 	Individuals with limited vision
 	often find it more comfortable to read content
-	when there is a a particular type of contrast
+	when there is a particular type of contrast
 	between foreground and background colors.
 
 	Operating systems can provide built-in color themes,