DOMUI: Fix a typo that caused a text to be shown as 'undefined'.

chrome/browser/resources/options/content_settings.html

 <div class="page hidden" id="contentSettingsPage">
   <h1>
     <span i18n-content="advancedPage"></span>
     &gt;
     <span i18n-content="contentSettingsPage"></span>
   </h1>
 
   <!-- Navigation tabs -->
   <div class="subpages-nav-tabs">
     <span i18n-content="cookies_tab_label" id="cookies-nav-tab"
@@ skipping 93 matching lines @@
     <table class="option-control-table">
     <tr>
       <td class="option-name"><label>
         <input type="radio" name="javascript" value="allow">
           <span i18n-content="javascript_allow"></span>
       </label></td>
     </tr>
     <tr>
       <td class="option-name"><label>
         <input type="radio" name="javascript" value="block">
-          <span i18n-content="javscript_block"></span>
+          <span i18n-content="javascript_block"></span>
       </label></td>
     </tr>
     </table>
 
     <div class="exceptionsLink" i18n-content="content_exceptions"></div>
     <div id="javascriptExceptionsArea" contentType="javascript">
       <list id="javascriptExceptionsList"></list>
     </div>
   </div>
 
@@ skipping 106 matching lines @@
       </label></td>
     </tr>
     </table>
 
     <div class="exceptionsLink" i18n-content="content_exceptions"></div>
     <div id="notificationsExceptionsArea" contentType="notifications">
       <list id="notificationsExceptionsList"></list>
     </div>
   </div>
 </div>