Remove unmatched bracket in --no-clean help string
Remove unmatched bracket in --no-clean help string

rouge8/pip,xavfernandez/pip,rouge8/pip,rouge8/pip,sbidoul/pip,pypa/pip,xavfernandez/pip,pypa/pip,sbidoul/pip,pradyunsg/pip,pradyunsg/pip,xavfernandez/pip,pfmoore/pip,pfmoore/pip