MAINT: fix typo in string_ufuncs.cpp (#21773)
MAINT: fix typo in string_ufuncs.cpp (#21773)

recieve -> receive inline comment
pdebuyl/numpy,mhvk/numpy,mattip/numpy,charris/numpy,mhvk/numpy,endolith/numpy,mhvk/numpy,numpy/numpy,rgommers/numpy,rgommers/numpy,charris/numpy,numpy/numpy,mattip/numpy,endolith/numpy,anntzer/numpy,mhvk/numpy,pdebuyl/numpy,charris/numpy,rgommers/numpy,pdebuyl/numpy,endolith/numpy,mattip/numpy,anntzer/numpy,numpy/numpy,rgommers/numpy,pdebuyl/numpy,charris/numpy,endolith/numpy,numpy/numpy,mattip/numpy,anntzer/numpy,mhvk/numpy,anntzer/numpy