Fix grammar in list of abstract roles to avoid (#40730)

Update index.md

Author: redwoodsteve

files/en-us/web/accessibility/aria/reference/roles/index.md

@@ -134,7 +134,7 @@ Window roles define sub-windows to the main document window, within the same win
 
 Abstract roles are only intended for use by browsers to help organize and streamline a document. They should not be used by developers writing HTML markup. Doing so will not result in any meaningful information being conveyed to assistive technologies or to users.
 
-Avoid using [`command`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/command_role), [`composite`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/composite_role), [`input`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/input_role), [`landmark`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/landmark_role), [`range`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/range_role), [`roletype`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/roletype_role), [`section`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/section_role), [`sectionhead`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/sectionhead_role), [`select`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/select_role), [`structure`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/structure_role), [`widget`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/widget_role),and [`window`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/window_role).
+Avoid using [`command`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/command_role), [`composite`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/composite_role), [`input`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/input_role), [`landmark`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/landmark_role), [`range`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/range_role), [`roletype`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/roletype_role), [`section`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/section_role), [`sectionhead`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/sectionhead_role), [`select`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/select_role), [`structure`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/structure_role), [`widget`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/widget_role), and [`window`](/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/window_role).
 
 > [!NOTE]
 > Don't use abstract roles in your sites and applications. They are for use by browsers. They are included for reference only.