syz-hub: fix log format string
syz-hub: fix log format string

hyz0906/syzkaller,dotweiba/syzkaller,dotweiba/syzkaller,google/syzkaller,xairy/syzkaller,google/syzkaller,xairy/syzkaller,zoulasc/syzkaller,google/syzkaller,xairy/syzkaller,dotweiba/syzkaller,google/syzkaller,dotweiba/syzkaller,google/syzkaller,xairy/syzkaller,hyz0906/syzkaller,zoulasc/syzkaller,xairy/syzkaller,zoulasc/syzkaller,hyz0906/syzkaller,hyz0906/syzkaller,google/syzkaller,zoulasc/syzkaller,xairy/syzkaller,hyz0906/syzkaller,xairy/syzkaller,google/syzkaller