Fix use of kineticsSpeciesIndex in diamond_cvd examples

[speth]

Fixes #1806

Changes proposed in this pull request

• Fix incorrect arguments to kineticsSpeciesIndex in both the Python and Matlab versions of the diamond_cvd example

If applicable, fill in the issue number this pull request is fixing

Closes #1806

Checklist

• [x] The pull request includes a clear description of this code change
• [x] Commit messages have short titles and reference relevant issues
• [x] Build passes (scons build & scons test) and unit tests address code coverage
• [x] Style & formatting of contributed code follows contributing guidelines
• [x] The pull request is ready for review

[codecov[bot]]

Codecov Report

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

Project coverage is 73.26%. Comparing base (70521b7) to head (de03728). Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1814 +/- ## ======================================= Coverage 73.26% 73.26% ======================================= Files 383 383 Lines 54620 54620 Branches 9099 9099 ======================================= + Hits 40016 40019 +3 + Misses 11601 11599 -2 + Partials 3003 3002 -1 ```

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