语法高亮，滚动条美化，设置页面调整

docs/linux/pwck.html

@@ -3,9 +3,9 @@
 <h2 id="补充说明">补充说明</h2>
 <p><strong>pwck命令</strong> 用来验证系统认证文件<code>/etc/passwd</code>和<code>/etc/shadow</code>的内容和格式的完整性。</p>
 <h3 id="语法">语法</h3>
-<pre><code>pwck(选项)(参数)</code></pre>
+<pre><code class="language-bash">pwck(选项)(参数)</code></pre>
 <h3 id="选项">选项</h3>
-<pre><code>-q：仅报告错误信息；
+<pre><code class="language-bash">-q：仅报告错误信息；
 -s：以用户id排序文件“/etc/passwd”和“/etc/shadow”;
 -r：只读方式运行指令。</code></pre>
 <h3 id="参数">参数</h3>
@@ -14,7 +14,7 @@
 <li>影子文件：指定影子文件的路径。</li>
 </ul>
 <h3 id="实例">实例</h3>
-<pre><code>pwck /etc/passwd
+<pre><code class="language-bash">pwck /etc/passwd
 user &#39;lp&#39;: directory &#39;/var/spool/lpd&#39; does not exist
 user &#39;news&#39;: directory &#39;/var/spool/news&#39; does not exist
 user &#39;uucp&#39;: directory &#39;/var/spool/uucp&#39; does not exist