语法高亮，滚动条美化，设置页面调整

docs/javascript/Reference/Global_Objects/RegExp/multiline.html

@@ -30,10 +30,10 @@
 <p>你无法直接更改此属性。</p>
 <h2 id="Examples" name="Examples">示例</h2>
 <h3 id="Example:_Using_MIN_VALUE" name="Example:_Using_MIN_VALUE">例子：使用 <code>multiline</code></h3>
-<pre class="brush:js">var regex = new RegExp("foo", "m")
+<pre><code class="language-js">var regex = new RegExp("foo", "m")
 
 console.log(regex.multiline) // true
-</pre>
+</code></pre>
 <h2 id="规范">规范</h2>
 <table class="standard-table">
 <tbody>