/usr/share/man/man5/svgalibrc.5.gz is in libsvga1 1:1.4.3-31.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man5/libvga.config.5.gz
/usr/share/man/man5/libvga.config.5.gz