Update launcher-error-codes.md for ZWEL0072E

[DivergentEuropeans]

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[Martin-Zeithaml]

I am not sure about this. The typical situation to get this error code is a typo in path, permission or encoding, let's assume the config is /zowe/zowe.yaml, but you made a typo in CONFIG path:

//* Launcher env
//STDENV   DD  *
CONFIG=/zowe/zowe.yml             

And then in SYS00001 joblog, you can see:

ZWEL0318E - failed to read '/zowe/zowe.yml' - EDC5129I No such file or directory.

[DivergentEuropeans]

Not sure @Martin-Zeithaml ! Other than what I described is what fixed my issue (this exact error code)