List the defaults in documentation

Very simple change to allow displaying of defaults in documentation
### JSON schema
```JSON
"order": {
  "description": "Sort ascending or descending",
  "example": "desc",
  "default": "desc",
  "enum": ["asc", "desc"],
  "type": "string"
},
```

### Before
<table>
  <tr>
    <th>Name</th>
    <th>Type</th>
    <th>Description</th>
    <th>Example</th>
  </tr>
  <tr>
    <td><strong>order</strong></td>
    <td><em>string</em></td>
    <td>Sort ascending or descending<br/><b>one of:</b><code>"asc"</code> or <code>"desc"</code></td>
    <td><code>"desc"</code></td>
  </tr>
</table>

### Now
<table>
  <tr>
    <th>Name</th>
    <th>Type</th>
    <th>Description</th>
    <th>Example</th>
  </tr>
  <tr>
    <td><strong>order</strong></td>
    <td><em>string</em></td>
    <td>Sort ascending or descending<br/><b>default:</b> <code>"desc"</code><br/><b>one of:</b><code>"asc"</code> or <code>"desc"</code></td>
    <td><code>"desc"</code></td>
  </tr>
</table>