make error message windows-compliant
make error message windows-compliant

Signed-off-by: Renee Chu <dbb10253d556b7398455fa674afa4c4a5a96979a@pivotal.io>

simonleung8/cli,simonleung8/cli,simonleung8/cli,fujitsu-cf/cli,fujitsu-cf/cli,fujitsu-cf/cli