[css-color] Remove bad link, reformat issue linebreaking.

Author: tabatkins

css-color/Overview.bs

@@ -1938,11 +1938,13 @@ Specifying a color profile: the ''color-profile'' at-rule</h3>
 <h2 id="working-color-space">
 Working Color Space</h2>
 
-	Issue: Resolved at San Francisco to add a working-color-space at-rule, which
-	affects the entire document. Compositing, interpolation, blending use this.
-	Initial value is sRGB. linear-sRGB, p3, rec2020, and lab were also discussed as values.
-	Chris to read the canvas spec to see what it does there, particularly for the
-	'optimal' value.
+	Issue: Resolved at San Francisco to add a working-color-space at-rule,
+	which affects the entire document.
+	Compositing, interpolation, blending use this.
+	Initial value is sRGB.
+	linear-sRGB, p3, rec2020, and lab were also discussed as values.
+	Chris to read the canvas spec to see what it does there,
+	particularly for the "optimal" value.
 
 
 <h2 id='cmyk-colors'>