Fixing reference answer of Salary Calculator for consistancy

[jagdish-15]

pull request

I understand that this change does not significantly impact the outcome of the exercise, but I’ve noticed a small inconsistency that appears in the guidance tab for mentors reviewing this exercise. While it doesn't affect the functionality, these types of inconsistencies can be misleading for mentors. To address this, I am submitting this PR to adjust just two lines and resolve the inconsistency. Thank you for considering the change!

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[jagdish-15]

Hi @kahgoh,

I wanted to check if modifying this particular change will affect the answer shown in the Guidance tab during mentoring. Could you please confirm?

Thank you!

[kahgoh]

You're right, this solution is shown in the concept tab for the mentoring notes because it is configured as the exemplar solution in the exercise's config.json. I think most of concept exercises (this is a concept exercise) are configured with an exemplar solutions, but not the practice ones.