fix: triggeredBy should print event on table output

[josedonizetti]

Fix #3790

TIME             UID    COMM             PID     TID     RET              EVENT                     ARGS
14:36:15:580419  1000   strace           3450532 3450532 0                anti_debugging            triggeredBy: ptrace

instead of

TIME             UID    COMM             PID     TID     RET              EVENT                     ARGS
14:38:21:840737  1000   strace           3452247 3452247 0                anti_debugging            triggeredBy: map[args:[{{request string} PTRACE_TRACEME} {{pid pid_t} 0} {{addr void*} 0x0} {{data void*} 0x0}] id:101 name:ptrace returnValue:0]

[AlonZivony]

LGTM