fix typo

Co-authored-by: Theresa O'Connor <[email protected]>

Author: frivoal

index.bs

@@ -1383,7 +1383,7 @@ Elected Groups Vacated Seats</h5>
 			the participant resigns, or
 
 		<li>
-			the participant is [=removed=] or [=recalled=], oor
+			the participant is [=removed=] or [=recalled=], or
 
 		<li>
 			an Advisory Board or TAG participant changes affiliations