update result-text to multi-value-text for author field

Author: alexprudhomme

index.html

@@ -250,7 +250,7 @@
                     <atomic-result-fields-list>
                       <atomic-field-condition class="field" if-defined="author">
                         <span class="field-label"><atomic-text value="author"></atomic-text>:</span>
-                        <atomic-result-text field="author"></atomic-result-text>
+                        <atomic-result-multi-value-text field="author"></atomic-result-multi-value-text>
                       </atomic-field-condition>
 
                       <atomic-field-condition class="field" if-defined="source">