update pydoc strings

[ajpotts]

Verify each of the modules has up-to-date pydoc strings for all functions.

[ajpotts]

• [ ] arkouda.array_api
• [ ] arkouda.accessor
• [ ] arkouda.alignment
• [ ] arkouda.array_view
• [ ] arkouda.categorical
• [ ] arkouda.client
• [ ] arkouda.client_dtypes
• [ ] https://github.com/Bears-R-Us/arkouda/issues/2924
• [ ] arkouda.dtypes
• [ ] arkouda.groupbyclass
• [ ] arkouda.history
• [ ] arkouda.index
• [ ] arkouda.infoclass
• [ ] arkouda.io
• [ ] arkouda.io_util
• [ ] arkouda.join
• [ ] arkouda.logger
• [ ] arkouda.match
• [ ] arkouda.matcher
• [ ] arkouda.numeric
• [ ] arkouda.pdarrayclass
• [ ] arkouda.pdarraycreation
• [ ] arkouda.pdarraysetops
• [ ] arkouda.plotting
• [ ] arkouda.row
• [ ] arkouda.security
• [ ] arkouda.segarray
• [ ] arkouda.series
• [ ] arkouda.sorting
• [ ] arkouda.strings
• [ ] arkouda.timeclass
• [ ] arkouda.util