docs: Update proxylite example in dev guide
docs: Update proxylite example in dev guide

tobilg/dcos-commons,comptelfwd/dcos-commons,mesosphere/dcos-commons,mesosphere/dcos-commons,adragomir/dcos-commons,vishnu2kmohan/dcos-commons,comptelfwd/dcos-commons,adragomir/dcos-commons,vishnu2kmohan/dcos-commons,comptelfwd/dcos-commons,mesosphere/dcos-commons,tobilg/dcos-commons,vishnu2kmohan/dcos-commons,comptelfwd/dcos-commons,tobilg/dcos-commons,comptelfwd/dcos-commons,adragomir/dcos-commons,tobilg/dcos-commons,vishnu2kmohan/dcos-commons,adragomir/dcos-commons,mesosphere/dcos-commons,vishnu2kmohan/dcos-commons,mesosphere/dcos-commons,adragomir/dcos-commons,comptelfwd/dcos-commons,tobilg/dcos-commons