bikeshed fixes

Author: svgeesus

css-transforms-2/Overview.bs

@@ -774,7 +774,7 @@ A computed value of ''transform-style/preserve-3d'' for 'transform-style' establ
 Grouping property values {#grouping-property-values}
 ------------------------
 
-The following CSS property values require the user agent to create a flattened representation of the descendant elements before they can be applied, and therefore force the element to have a used style of ''transform-style/flat'' for 'preserve-3d'.
+The following CSS property values require the user agent to create a flattened representation of the descendant elements before they can be applied, and therefore force the element to have a used style of ''transform-style/flat'' for ''transform-style/preserve-3d''.
 
 * 'overflow': any value other than ''overflow/visible'' or ''overflow/clip''.
 * 'opacity': any value less than 1.