Update index.html

Co-authored-by: Valerie Young 

index.html

@@ -217,7 +217,7 @@ Exposing HTML Features That Do Not Directly Map to Accessibility APIs
     
       Exposing HTML Features That Require a Minimum Role
       
-        A minimum role is the equivalent WAI-ARIA role an element will map to if the element has no more specific implicit role, e.g., a non-generic role. This can help ensure that users of assistive technologies get the best possible experience for commonly-used and valid HTML markup where otherwise a role would not be exposed.
+        A minimum role is the equivalent WAI-ARIA role an element will map to if the element does not have a more specific implicit role, e.g., a non-generic role. This can help ensure that users of assistive technologies get the best possible experience for commonly-used and valid HTML markup where otherwise a role would not be exposed.
       
       
         A minimum role is provided when all of the following conditions are true: