ui: add line numbers to record_detail code

packages/ui-default/templates/record_detail.html

@@ -18,7 +18,7 @@
         </div>
       </div>
       <div class="section__body">
-        <pre><code class="line-numbers language-{{ model.setting.langs[rdoc.lang].highlight }}">{{ rdoc['code'] }}</code></pre>
+        <pre class="line-numbers"><code class="language-{{ model.setting.langs[rdoc.lang].highlight }}">{{ rdoc['code'] }}</code></pre>
       </div>
     </div>
     {% endif %}