badges show on docs.ropensci.org for some pkgs

[dpprdan]

For some packages, e.g. opencage, the badges in the README.md don't show on https://docs.ropensci.org/opencage/ (or only the one for peer-review in the sidebar).

Other examples are:

• gert
• awardFindR
• cffr
• gitignore

I (vaguely) suspect the <!-- badges: start --> comments to be the culprit as that seems to be the common denominator of the repos above.