Add correct harvester args to inv harvester README
Add correct harvester args to inv harvester README

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CenterForOpenScience/scrapi,mehanig/scrapi,mehanig/scrapi,alexgarciac/scrapi,felliott/scrapi,erinspace/scrapi,CenterForOpenScience/scrapi,fabianvf/scrapi,felliott/scrapi,erinspace/scrapi,fabianvf/scrapi