add some comments in order to find out what is the musliMultHitCalPar…

[audreychatillon]

… to be added in the CalibPar.par

debug R3BMusliMapped2Cal

debug

debug Sci vs Musli while running macro

ifndef -> pragma once (minor modification + add some comments)

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Mention any issue this PR is resolved or is related to.

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Checklist:

• [ ] Rebased against dev branch
• [ ] My name is in the resp. CONTRIBUTORS/AUTHORS file
• [ ] Followed the pull request guidlines and the Git workflow
• [ ] Followed the seven rules of great commit messages