Update warning disclosure with organizers' response

Update warning disclosure with organizers' response.

README.md

@@ -231,7 +231,7 @@ dataset_info:
     <li>Non-English files contain many English sentences.</li>
     <li>Their "parallel" sentences in English are not aligned: they are uncorrelated with their counterpart.</li>
   </ul>
-  <p>We have contacted the WMT organizers.</p>
+  <p>We have contacted the WMT organizers, and in response, they have indicated that they do not have plans to update the Common Crawl corpus data. Their rationale pertains to the expectation that such data has been superseded, primarily by CCMatrix, and to some extent, by ParaCrawl datasets.</p>
 </div>
 
 Translation dataset based on the data from statmt.org.