Update to latest boilerplate.

Author: tabatkins

css3-images/Overview.html

@@ -2356,10 +2356,9 @@ <h3 id=conformance-classes><span class=secno>7.2. </span> Conformance
   </dl>
 
   <p>A style sheet is conformant to CSS Image Values and Replaced Content
-   Module Level 3 if all of its declarations that use properties defined in
-   this module have values that are valid according to the generic CSS
-   grammar and the individual grammars of each property as given in this
-   module.
+   Module Level 3 if all of its statements that use syntax defined in this
+   module are valid according to the generic CSS grammar and the individual
+   grammars of each feature defined in this module.
 
   <p>A renderer is conformant to CSS Image Values and Replaced Content Module
    Level 3 if, in addition to interpreting the style sheet as defined by the

css3-images/Overview.src.html

@@ -1597,10 +1597,7 @@ <h3 id="conformance-classes">
 			that writes a style sheet.
 	</dl>
 
-	<p>A style sheet is conformant to CSS Image Values and Replaced Content Module Level 3
-	if all of its declarations that use properties defined in this module
-	have values that are valid according to the generic CSS grammar and the
-	individual grammars of each property as given in this module.
+	<p>A style sheet is conformant to CSS Image Values and Replaced Content Module Level 3 if all of its statements that use syntax defined in this module are valid according to the generic CSS grammar and the individual grammars of each feature defined in this module.
 
 	<p>A renderer is conformant to CSS Image Values and Replaced Content Module Level 3
 	if, in addition to interpreting the style sheet as defined by the