Update tls_client_key example path
Update tls_client_key example path

Signed-off-by: JimGalasyn <19bf0aecea2bae9799bd42acbde62714cabd7440@docker.com>

vdemeester/notary,docker/notary,umayr/notary,HuKeping/notary,docker/notary,HuKeping/notary,johnsandiford/notary,endophage/notary,johnsandiford/notary,HuKeping/notary,vdemeester/notary,johnsandiford/notary,docker/notary,umayr/notary,endophage/notary,vdemeester/notary,jfrazelle/notary,jfrazelle/notary,jfrazelle/notary,endophage/notary,umayr/notary