Merge branch 'issues/47'

* issues/47:
  gitlab-ci: Call renamed check target
  Makefile: Remove mkinitcpio-archiso specific targets
  README.rst: Remove initcpio, fix formatting
  Remove mkinitcpio-archiso files
7 jobs for master in 34 minutes and 8 seconds (queued for 6 seconds)
Status Name Job ID Coverage
  Check
passed check #32189

00:00:13

 
  Build
passed build_long: [baseline iso] #32192
fast-single-thread

00:18:06

passed build_long: [baseline netboot] #32193
fast-single-thread

00:16:33

passed build_long: [releng iso] #32194
fast-single-thread

00:33:52

passed build_long: [releng netboot] #32195
fast-single-thread

00:30:29

passed build_short: [baseline bootstrap] #32190

00:14:03

passed build_short: [releng bootstrap] #32191

00:13:55