[css-transitions] Fix reasonable bikeshed fatal error: fix quoting of values (not properties).

Author: dbaron

css-transitions/Overview.html

@@ -709,7 +709,7 @@ <h3 id=transition-timing-function-property><span class=secno>2.3. </span><a
     class=css>start</code>’ or ‘<code class=css>end</code>’, and
     specifies the point at which the change of values occur within the
     interval. If the second parameter is omitted, it is given the value
-    ‘<code class=property>end</code>’.
+    ‘<code class=css>end</code>’.
 
    <dt> cubic-bezier(&lt;number&gt;, &lt;number&gt;, &lt;number&gt;,
     &lt;number&gt;)

css-transitions/Overview.src.html

@@ -649,7 +649,7 @@ <h3 id="transition-timing-function-property"><a id="transition-timing-function_t
           The second parameter, which is optional, is
           either the value ''start'' or ''end'', and specifies the point
           at which the change of values occur within the interval.
-          If the second parameter is omitted, it is given the value 'end'.
+          If the second parameter is omitted, it is given the value ''end''.
         </dd>
         <dt>
           cubic-bezier(&lt;number&gt;, &lt;number&gt;, &lt;number&gt;, &lt;number&gt;)