docker语法高亮

docs/docker/docker diff.html

@@ -1,10 +1,10 @@
 <h1>Docker diff 命令</h1>
 <p><strong>docker diff : </strong>检查容器里文件结构的更改。</p>
 <h3>语法</h3>
-<pre>docker diff [OPTIONS] CONTAINER</pre>
+<pre><code class="language-Docker">docker diff [OPTIONS] CONTAINER</code></pre>
 <h3>实例</h3>
 <p>查看容器mymysql的文件结构更改。</p>
-<pre>runoob@runoob:~$ docker diff mymysql
+<pre><code class="language-Docker">runoob@runoob:~$ docker diff mymysql
 
 A /logs
 
@@ -19,5 +19,5 @@ A /run/mysqld/mysqld.sock
 
 C /tmp
 
-</pre>
+</code></pre>