Update cat4-tool.cwl
Update cat4-tool.cwl

if always using docker, it must be `requirements` instead of `hints`
curoverse/common-workflow-language,mr-c/common-workflow-language,common-workflow-language/common-workflow-language,dleehr/common-workflow-language,dleehr/common-workflow-language,common-workflow-language/common-workflow-language,common-workflow-language/common-workflow-language,mr-c/common-workflow-language,mr-c/common-workflow-language,common-workflow-language/common-workflow-language,dleehr/common-workflow-language,curoverse/common-workflow-language,dleehr/common-workflow-language