/usr/share/doc/graphviz/pdf/circo.1.pdf.gz is in graphviz-doc 2.40.1-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/graphviz/pdf/dot.1.pdf.gz
/usr/share/doc/graphviz/pdf/dot.1.pdf.gz