Correction de la dépendance : texlive-sciences n'existe pas

- Avec S : https://packages.debian.org/search?keywords=texlive-sciences
- Sans S : https://packages.debian.org/search?keywords=texlive-science

Closes #35
1 job for develop in 2 minutes and 33 seconds (queued for 1 second)
Status Name Job ID Coverage
  Test
failed tox #676195

00:02:33

 
Name Stage Failure
failed
tox Test
Testing of doctests in the sources finished, look at the results in build/doctest/output.txt.
___________________________________ summary ____________________________________
py35: commands succeeded
ERROR: py36: InterpreterNotFound: python3.6
py37: commands succeeded
doc: commands succeeded
doctest: commands succeeded
Authenticating with credentials from /root/.docker/config.json
ERROR: Job failed: exit code 1