They look like search-replace of debian with devuan, which means they point at inexistent URLs, since devuan.org doesn't map to debian.org URIs.

E.g.,

Vcs-Browser: http://svn.devuan.org/wsvn/ddp/manuals/trunk/devuan-faq/
Vcs-Svn: svn://svn.devuan.org/ddp/manuals/trunk/devuan-faq/
Homepage: http://www.devuan.org/doc/user-manuals#faq