class="aui" Added to Table Definitions in Readme

Summary

In a README.md in Stash, if you have a table definition in a code block, class="aui" gets appended to the table definition in the render of the readme on the repository page.

Steps to Reproduce

1. Create a README.md in your repository.
2. Add the following contents:

   ```xml
   <table-definition>
   </table-definition>
   ```
   

Expected Results

class="aui" does not get added.

Actual Results

class="aui" is appended to the table definition when the readme is rendered.

Workaround

There is no workaround at this time.