[css-content] inhibit doesn't exist anymore

Author: tabatkins

css-content/Overview.bs

@@ -115,7 +115,7 @@ Inserting and replacing content with the 'content' property</h2>
 		<dd>
 			For an element, this computes to ''content/contents''.
 
-			For ''::before'' and ''::after'', this computes to ''inhibit''.
+			For ''::before'' and ''::after'', this computes to ''content/none''.
 
 		<dt><dfn>none</dfn>
 		<dd>