[css-color-5] comment out-of-date image

Author: svgeesus

css-color-5/Overview.bs

@@ -288,7 +288,7 @@ which is rgb(52.446% 45.821% 62.953%)
 
 </div>
 
-Issue:(4711)
+Issue: <a href="https://github.com/w3c/csswg-drafts/issues/4711">color-mix to allow more than two colors? #4711</a>
 
 Selecting the most contrasting color: the ''color-contrast()'' function {#colorcontrast}
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@@ -406,7 +406,8 @@ Adjusting colors: the ''color-adjust'' function {#coloradjust}
 		* which is <span class="swatch" style="--color: rgb(57.58%, 32.47%, 3.82%)"></span> rgb(57.58%, 32.47%, 3.82%)
 	</div>
 
-<img src="images/adjust_red_lightness30.png" alt="Result of adjust-color(red, lightness(30%)" />
+<!-- image out of sync with example
+	<img src="images/adjust_red_lightness30.png" alt="Result of adjust-color(red, lightness(30%)" /> -->
 
 Relative color syntax {#relative-colors}
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