add Multivariate images to distribution gallery

[codecov-commenter]

Codecov Report

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

Project coverage is 82.12%. Comparing base (8f36b1e) to head (464af29). Report is 2 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #489 +/- ## ========================================== - Coverage 82.36% 82.12% -0.24% ========================================== Files 96 96 Lines 7895 7901 +6 ========================================== - Hits 6503 6489 -14 - Misses 1392 1412 +20 ```

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