Merge branch 'step_per_unit_typos' into 'master'

typo. step_per_unit -> steps_per_unit

See merge request !3835
10 jobs for master in 105 minutes and 56 seconds (queued for 5 seconds)
Name Stage Failure
failed
test_bliss_cov Tests
Running after_script
Running after script...
$ python scripts/profiling2txt.py
Traceback (most recent call last):
File "scripts/profiling2txt.py", line 3, in <module>
with open("prof/combined.txt", "w") as f:
FileNotFoundError: [Errno 2] No such file or directory: 'prof/combined.txt'
Cleaning up file based variables
ERROR: Job failed: exit code 1