[css-images-3] Make image-rendering:pixelated work the same way in both directions, for simplicity.

Author: tabatkins

css-images-3/Overview.bs

@@ -1936,10 +1936,8 @@ Determing How To Scale an Image: the 'image-rendering' property</h3>
 
 		<dt><dfn>pixelated</dfn>
 		<dd>
-			When scaling the image up in at least one dimension, the "nearest neighbor" or similar algorithm must be used,
-			so that the image appears to be simply composed of very large pixels.
-			Otherwise,
-			this is the same as <a value for=image-rendering>auto</a>.
+			The image must be scaled with the "nearest neighbor" or similar algorithm,
+			to preserve a "pixelated" look as the image changes in size.
 	</dl>
 
 	<p class='issue'>

css-images-3/Overview.html

@@ -1817,10 +1817,8 @@ <h3 class="heading settled" data-level=5.3 id=the-image-rendering><span class=se
 
 		<dt><dfn class=css data-dfn-for=image-rendering data-dfn-type=value data-export="" id=valdef-image-rendering-pixelated>pixelated<a class=self-link href=#valdef-image-rendering-pixelated></a></dfn>
 		<dd>
-			When scaling the image up in at least one dimension, the "nearest neighbor" or similar algorithm must be used,
-			so that the image appears to be simply composed of very large pixels.
-			Otherwise,
-			this is the same as <a class=css data-link-for=image-rendering data-link-type=value href=#valdef-image-rendering-auto title=auto>auto</a>.
+			The image must be scaled with the "nearest neighbor" or similar algorithm,
+			to preserve a "pixelated" look as the image changes in size.
 	</dl>
 
 	<p class=issue id=issue-c0a2c82d><a class=self-link href=#issue-c0a2c82d></a>