tests/unit/api.py: minor improvement to docstring
tests/unit/api.py: minor improvement to docstring

henn/hil_sahil,meng-sun/hil,kylehogan/haas,meng-sun/hil,henn/haas,kylehogan/hil,SahilTikale/haas,henn/hil,CCI-MOC/haas,henn/hil,kylehogan/hil,henn/hil_sahil