Update CHANGES.rst to make it more obvious which versions of ramp fitting have been updated.

[hbushouse]

Resolves JP-nnnn Resolves RCAL-nnnn

Closes #

This PR addresses ...

Checklist

• [ ] added entry in CHANGES.rst (either in Bug Fixes or Changes to API)
• [ ] updated relevant tests
• [ ] updated relevant documentation
• [ ] updated relevant milestone(s)
• [ ] added relevant label(s)

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (538c20d) 84.31% compared to head (251899b) 84.31%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #234 +/- ## ======================================= Coverage 84.31% 84.31% ======================================= Files 35 35 Lines 6452 6452 ======================================= Hits 5440 5440 Misses 1012 1012 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.