Temporarily disable dicomlookup urls check

We know they are broken:
- #2068
and there is no immediate fix. This should disable them, until we
resolve them, and do not miss some other broken urls interim

Author: yarikoptic

.circleci/config.yml

@@ -61,6 +61,7 @@ jobs:
                 --ignore-url 'https://github.com/[^/]*' \
                 --ignore-url 'https://github.com/bids-standard/bids-specification/(pull|tree)/.*' \
                 --ignore-url 'https://www.incf.org' \
+                --ignore-url 'https://dicomlookup.com/dicomtags/.*' \
                 ~/project/site/*html ~/project/site/*/*.html
             else
               echo "Release PR - do nothing"