[cli] hotfix launch command for multi-nodes

[ver217]

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Closes #4164

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Fix launch command

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[github-actions]

The code coverage for the changed files is %.

Click me to view the complete report

Name                             Stmts   Miss  Cover
----------------------------------------------------
colossalai/cli/launcher/run.py     137    137     0%
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TOTAL                              137    137     0%