Merge branch 'demo_tweaks' into 'ducc0'

mention online documentation

See merge request !85
4 jobs for ducc0_0_10_0 in 17 minutes and 51 seconds (queued for 1 second)
latest
Status Name Job ID Coverage
  Build Docker
passed build_docker #1328722

00:00:14

 
  Testing
passed test_clang #1328724

00:17:25

passed test_gcc #1328723

00:16:43

 
  Release
passed release #1328725

00:00:12