docs: Distribute documentation source files again

These were missing from the 0.119 release tarball.

Resolves: #143
Signed-off-by: Simon McVittie <smcv@debian.org>
1 job for dist-docs in 2 minutes and 5 seconds (queued for 9 seconds)
Status Job ID Name Coverage
  Test
passed #10445422
build_stable

00:02:05