Combined fleet formation name mismatch cause script stop

[cplusx]

There is a name mismatch in the combined fleet formation, which causes script stop when choosing formation. The name in kcauto/kca_enums/formation.py is combined_fleet_x while in the kcauto/util/kca.py it is formation_combinedfleet_x.

To fix it, remove one _ in the kcauto/kca_enums/formation.py: 'combined_fleet_x' -> 'combinedfleet_x'

[perryhuynh]

#405

Already fixed, please pull latest

[mrmin123]

To clarify, pull the latest 390-2019-fall-event branch.

[perryhuynh]

@cplusx I forgot to update the references in code, so once the 2nd PR is merged it should work (for real this time)