[css-text-4] text-wrap: none -> nowrap for proper shorthanding, better out-of-contextness

Author: fantasai

css-text-4/Overview.bs

@@ -158,7 +158,7 @@ Text Wrap Settings: the 'text-wrap' property</h3>
 
 	<pre class="propdef">
 	Name: text-wrap
-	Value: normal | none | avoid | balance
+	Value: normal | nowrap | avoid | balance
 	Initial: normal
 	Applies to: all elements
 	Inherited: yes
@@ -177,7 +177,7 @@ Text Wrap Settings: the 'text-wrap' property</h3>
 			for the WJ, ZW, and GL line-breaking classes in
 			[[!UAX14]] must be honored.
 
-		<dt><dfn>none</dfn>
+		<dt><dfn>nowrap</dfn>
 		<dd>
 			Lines may not break; text that does not fit within the block container
 			overflows it.