Update .gitlab-ci to generate html and epub for all languages
There are the artifacts generated with this command: https://gitlab.com/joubu/kohadocs/-/jobs/47608352/artifacts/browse
Note: Since I have added the epub part
There are the artifacts generated with this command: https://gitlab.com/joubu/kohadocs/-/jobs/47608352/artifacts/browse
Note: Since I have added the epub part