readme update

README.md

@@ -552,7 +552,7 @@ FIND CVES BY ATTRIBUTE:
  --q-severity IMPACT Narrow down results by severity rating (specify one of
  'low', 'moderate', 'important', or 'critical')
  --q-product PRODUCT Narrow down results by product name via case-
- insensitive regex (e.g.: 'linux 7' or openstack
+ insensitive regex (e.g.: 'linux 7' or 'openstack
  platform [89]'); the API checks this against the
  'FIXED_RELEASES' field so will only match CVEs where
  PRODUCT matches the 'product_name' of some released