[Website] Update role for Andy Grove (#4967)

diff --git a/committers.html b/committers.html
index 0f8b400..a832773 100644
--- a/committers.html
+++ b/committers.html
@@ -199,7 +199,7 @@
 </tr>
 <tr>
 <td>Andy Grove</td>
-<td>Committer</td>
+<td>PMC</td>
 <td>agrove</td>
 <td>RMS</td>
 </tr>