Fix misleading typo in cable cel python docs. (#1153)
Fix misleading typo in cable cel python docs. (#1153)

Fixes #1149.
halfflat/arbor,halfflat/arbor,halfflat/nestmc-proto,halfflat/arbor,halfflat/arbor,halfflat/nestmc-proto,halfflat/nestmc-proto,eth-cscs/nestmc-proto,eth-cscs/nestmc-proto,halfflat/arbor,eth-cscs/nestmc-proto