Fix key rename command output error
Fix key rename command output error

License: MIT
Signed-off-by: Xiaoyi Wang <7da8ec6abba2f50c2a6fbee008525b2bf19f5f5d@hyperchain.cn>

Luzifer/go-ipfs,Luzifer/go-ipfs,chriscool/go-ipfs,ianopolous/go-ipfs,ianopolous/go-ipfs,chriscool/go-ipfs,ianopolous/go-ipfs,Luzifer/go-ipfs,chriscool/go-ipfs