Align cluster delete copy

Author: Mattia Franchetto

frontend/locales/en/strings.json

@@ -1172,7 +1172,8 @@
       "add": "Add user",
       "refresh": "Refresh",
       "remove": "Remove",
-      "cancel": "Cancel"
+      "cancel": "Cancel",
+      "delete": "Delete"
     },
     "helpPanel": {
       "title": "Users",

frontend/src/components/DeleteDialog.tsx

@@ -43,7 +43,7 @@ export function DeleteDialog({children, deleteCallback, header, id}: any) {
           <SpaceBetween direction="horizontal" size="xs">
             <Button onClick={cancel}>{t('users.actions.cancel')}</Button>
             <Button onClick={deleteCallback}>
-              {t('users.actions.remove')}
+              {t('users.actions.delete')}
             </Button>
           </SpaceBetween>
         </Box>