Improve docstring for condition foreign-function-not-prepared
Improve docstring for condition foreign-function-not-prepared

stassats/cffi,mcna/cffi,attila-lendvai/cffi,dkochmanski/cffi,cffi/cffi,attila-lendvai/cffi,3b/cffi,dkochmanski/cffi,3b/cffi,stassats/cffi,cffi/cffi,cffi/cffi,mcna/cffi,3b/cffi,dkochmanski/cffi,stassats/cffi