typo fix

src/include/66/service.h

src/lib66/exec/ssexec_disable.c

src/lib66/exec/ssexec_enable.c

src/lib66/exec/ssexec_init.c

src/lib66/exec/ssexec_reload.c

src/lib66/exec/ssexec_remove.c

src/lib66/exec/ssexec_restart.c

src/lib66/exec/ssexec_signal.c

src/lib66/exec/ssexec_start.c

src/lib66/service/service_enable_disable.c

src/lib66/svc/svc_compute_ns.c