Error Line 114 document, attribute

Hi I am looking for some help to fix this. I really have no clue how to fix this. Checked my site with Validator and received this
Line 114
…nt” cols=”45″ rows=”10″ aria-required=”true”></textarea></p>
You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element.

As far as I can tell this has something to do with the word aria ? I think this is in the Header?

Does anyone know how and where to fix this?
Thank You