docs: improve doctests for complex number instances in lapack/base/crot #15853

Job	Run time
Rebase this PR on top of develop branch	0s
Check for required files	0s
Manage labels	0s
Update copyright header years	0s
Remove in-progress label	0s
Auto-fix lint errors	0s
Merge changes from develop branch into this PR	-10s
	-10s

Provide feedback