Fix description of 'change the preferred style sheet set name'. See bug 18538.

Author: skynavga

cssom/Overview.html

@@ -1087,8 +1087,7 @@ <h3 id="style-sheet-collections"><span class="secno">6.2 </span>Style Sheet Coll
   with name <var>name</var>, run these steps:</p>
 
   <ol>
-   <li><p>Let the <a href="#preferred-style-sheet-set-name">preferred style sheet set name</a> be
-   <var>current</var>.</li>
+   <li><p>Let <var>current</var> be the <a href="#preferred-style-sheet-set-name">preferred style sheet set name</a>.</li>
 
    <li><p>Set <a href="#preferred-style-sheet-set-name">preferred style sheet set name</a> to
    <var>name</var>.</li>
@@ -1098,7 +1097,7 @@ <h3 id="style-sheet-collections"><span class="secno">6.2 </span>Style Sheet Coll
    <var>current</var> and
    <a href="#last-style-sheet-set-name">last style sheet set name</a> is null
    <a href="#enable-a-style-sheet-set">enable a style sheet set</a> with name
-   <var>new</var>.</li>
+   <var>name</var>.</li>
   </ol>
 
   <!-- XXX ought to define "applied"

cssom/cssom-source

@@ -920,8 +920,7 @@
   with name <var>name</var>, run these steps:</p>
 
   <ol>
-   <li><p>Let the <span>preferred style sheet set name</span> be
-   <var>current</var>.</p></li>
+   <li><p>Let <var>current</var> be the <span>preferred style sheet set name</span>.</p></li>
 
    <li><p>Set <span>preferred style sheet set name</span> to
    <var>name</var>.</p></li>
@@ -931,7 +930,7 @@
    <var>current</var> and
    <span>last style sheet set name</span> is null
    <span>enable a style sheet set</span> with name
-   <var>new</var>.</p></li>
+   <var>name</var>.</p></li>
   </ol>
 
   <!-- XXX ought to define "applied"