fix: correct Andrew Hughes Chant link on Corpora & Datasets page

Replace unavailable URL:
https://ddmal.music.mcgill.ca/Andrew-Hughes-Chant/
with correct URL:
https://ddmal.ca/Andrew-Hughes-Chant/

Author: kyuchia

activities/corpora-and-datasets/index.html

@@ -80,11 +80,11 @@ <h1>Datasets and Corpora</h1>
     <div class="container">
       <div class="row">
         <div class="col-lg-12">
-          <h3 id="andrew-hughes-chant"><a href="https://ddmal.music.mcgill.ca/Andrew-Hughes-Chant/">Andrew Hughes Chant</a></h3>
+          <h3 id="andrew-hughes-chant"><a href="https://ddmal.ca/Andrew-Hughes-Chant/">Andrew Hughes Chant</a></h3>
           <ul>
             <li>Andrew Hughes’ published “Late Medieval Liturgical Offices (LMLO)” converted into MEI. Contains encodings of more than 200 late medieval church feasts, and more than 5000 chant melodies.</li>
             <li>Contributor: Yaolong Ju</li>
-            <li>Website: <a href="https://ddmal.music.mcgill.ca/Andrew-Hughes-Chant/">https://ddmal.music.mcgill.ca/Andrew-Hughes-Chant/</a></li>
+            <li>Website: <a href="https://ddmal.ca/Andrew-Hughes-Chant/">https://ddmal.ca/Andrew-Hughes-Chant/</a></li>
             <li>GitHub repository: <a href="https://github.com/DDMAL/Andrew-Hughes-Chant">https://github.com/DDMAL/Andrew-Hughes-Chant</a></li>
           </ul>
           <h3 id="bach-chorales-figured-bass-dataset"><a href="https://github.com/juyaolongpaul/Bach_chorale_FB">Bach Chorales Figured Bass dataset</a></h3>
@@ -144,4 +144,4 @@ <h3 id="the-string-quartets-by-felix-mendelssohn"><a href="https://github.com/DD
     <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
     <script type="text/javascript" src="../../js/bootstrap.min.js"></script>
   </body>
-</html>
+</html>