UpdateTableHeaderRule (act-rules#2074)

* UpdateTableHeaderRule

* Update table-header-cell-has-assigned-cells-d0f69e.md

* trigger test

* Update _rules/table-header-cell-has-assigned-cells-d0f69e.md

Co-authored-by: Jean-Yves Moyen <jym@siteimprove.com>

---------

Co-authored-by: Wilco Fiers <wilco.fiers@deque.com>
Co-authored-by: Jean-Yves Moyen <jym@siteimprove.com>

Author: 3 people

_rules/table-header-cell-has-assigned-cells-d0f69e.md

@@ -17,6 +17,7 @@ input_aspects:
 acknowledgments:
   authors:
     - Audrey Maniez
+    - Helen Burge    
     - Jey Nandakumar
   funding:
     - WAI-Tools
@@ -125,15 +126,15 @@ Each of the 4 `th` elements has an assigned `td` element, within the same `table
 ```html
 <table role="grid">
 	<thead>
-		<tr role="row">
+		<tr>
 			<td></td>
 			<th scope="col" role="columnheader">Breakfast</th>
 			<th scope="col" role="columnheader">Lunch</th>
 			<th scope="col" role="columnheader">Dinner</th>
 		</tr>
 	</thead>
 	<tbody>
-		<tr role="row">
+		<tr>
 			<th scope="row" role="rowheader">Day 1</th>
 			<td>8:00</td>
 			<td>13:00</td>