title: What is the correct format for denoting that an input parameter is a date/time in Apiary?
body: <p>I am editing some Apiary documentation on a project I am working on, and need to denote that a parameter to one of my API calls is a datetime string.  Apiary seems to be choking on the formatting of this parameter, so I'm wondering what the suggested approach for documenting this parameter in Apiary would be.</p>
  
  <p>To demonstrate, I took the standard default docs from Apiary and modified the <code>Choice</code> documentation to take a datetime object like so:</p>
  
  <pre><code>## Choice [/questions/{question_id}/choices/{choice_id}/{datetime}]
  
  + Parameters
      + question_id: 1 (required, number) - ID of the Question in form of an integer
      + choice_id: 1 (required, number) - ID of the Choice in form of an integer
      + datetime: 2015-05-05T12:30:00 (optional, date) - The date/time (ISO8601 format) associated with this choice
  </code></pre>
  
  <p>The end result of this is the following text:</p>
  
  <pre><code>datetime
  05-05T12:30:00 (optional, date) - The date/time (ISO8601 format) that all returned events should be greater than or equal to Example: 2015.
  </code></pre>
  
  <p>This is clearly wrong, even write down to the example value.  The dash (<code>-</code>) is a special character that is causing grief here.  What is the recommended approach for doing this right?</p>