updated the images and markdown showing wrong file names of COBOL compilation output

[ashiskumarnaik]

Proposed changes

updated the images and markdown showing wrong file names of COBOL compilation output

Fixes # (#301 )

Type of change

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• [x] Bug fix (change which fixes one or more issues)
• [ ] New feature (change which adds functionality or features to the course)
• [ ] Translations (change which adds or modifies translations of the course)
• [ ] Documentation (change which modifies documentation related to the course)
• [ ] This change requires an update to the course's z/OS environment

Checklist:

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• [x] I have read the Contributing Guideline
• [x] I have included a title and description for this PR
• [x] I have DCO-signed all of my commits that are included in this PR
• [x] I have tested it manually and there are no regressions found
• [ ] I have commented my code, particularly in hard-to-understand areas (if appropriate)
• [ ] I have made corresponding changes to the documentation (if appropriate)

[ashiskumarnaik]

Hi @tanto259 If I take screenshots , then my user id will also be captured . Do I need to blur it out ? (any suggestion)