Update page

Author: samarh

index.html

@@ -223,7 +223,7 @@ <h1>Transcript Duplication Checker</h1>
   <div class="legend">
     <span style="background:#c8f0c8;">matching</span>
     <span style="background:#fbd4d4;">different</span>
-    &mdash; hover a matching run to highlight its counterpart
+    &mdash; hover over a matching run to highlight its counterpart
   </div>
 </div>