fix help info in Makefile
fix help info in Makefile

Signed-off-by: heartlock <fad1d9aea7991bae993d05e7706ff8fe7de9e59f@zju.edu.cn>

heartlock/cri-tools,feiskyer/cri-tools,heartlock/cri-tools,Helen-Xie/cri-tools,feiskyer/cri-tools,xlgao-zju/cri-tools,Helen-Xie/cri-tools,feiskyer/cri-tools,xlgao-zju/cri-tools,heartlock/cri-tools,xlgao-zju/cri-tools,Helen-Xie/cri-tools