doc/server.md: certbot crontab

Remove the check on the /run/systemd/system directory. In one case it
prevented the server from properly launching the renewal (the directory
existed but this didn't seem to be a problem for certbot).
4 jobs for doc/fix-cron-certbot-doc in 4 minutes and 15 seconds (queued for 17 seconds)
Status Job ID Name Coverage
  Test Tools
passed #1184807
test_tools

00:00:12

 
  Test Quality
failed #1184808
allowed to fail
code_quality

00:00:05

 
  Tgz Release
failed #1184809
cidocker allowed to fail
build_doc

00:03:57

 
  Deploy Prod
manual #1184810
allowed to fail manual
deploy_doc
 
Name Stage Failure
failed
code_quality Test Quality
$ function propagate_env_vars() { # collapsed multi-line command
$ docker pull --quiet "$CODE_QUALITY_IMAGE"
unknown flag: --quiet
See 'docker pull --help'.
Uploading artifacts...
Runtime platform arch=386 os=linux pid=19808 revision=58272c27 version=12.7.0
WARNING: gl-code-quality-report.json: no matching files
ERROR: No files to upload
ERROR: Job failed: exit status 1
failed
build_doc Tgz Release
  user/index.html: http://www.imgt.org/IMGT_vquest
user/index.html: https://station1.arrest.tools/subsets
server/index.html: #makingbackups
Running after_script
Uploading artifacts for failed job
Uploading artifacts...
site/: found 106 matching files

Uploading artifacts to coordinator... ok
id=1184809 responseStatus=201 Created token=1C6k3_St
ERROR: Job failed: exit code 1