'make docs' does not open HTML docs in a browser to avoid SegFault.

Signed-off-by: Daniel Scheffler <danschef@gfz-potsdam.de>
5 jobs for master in 2 minutes and 42 seconds (queued for 2 seconds)
Status Name Job ID Coverage
  Test
failed test_enpt_enmapboxapp #90784

00:01:27

65.0%
manual test_enpt_enmapboxapp_install #90787
allowed to fail manual
passed test_styles #90785

00:00:34

passed test_urls #90786

00:00:41

 
  Deploy
skipped pages #90788
 
Name Stage Failure
failed
test_enpt_enmapboxapp Test
dumping object inventory... done
build succeeded, 1 warning.

The HTML pages are in _build/html.
make[1]: Leaving directory '/builds/EnMAP/GFZ_Tools_EnMAP_BOX/enpt_enmapboxapp/docs'
make[1]: *** [Makefile:20: html] Segmentation fault (core dumped)
make: *** [Makefile:97: docs] Error 2
Cleaning up file based variables
ERROR: Job failed: exit code 1