docs: sort gallery carousel cards

[bjlittle]

🚀 Pull Request

Description

This pull-request sorts the order of the gallery carousel example cards by their sphinx reference link to yield deterministic results after each build.

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[codecov[bot]]

Codecov Report

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

Project coverage is 91.19%. Comparing base (57c2c5f) to head (34763dc).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #869 +/- ## ======================================= Coverage 91.19% 91.19% ======================================= Files 58 58 Lines 2943 2943 ======================================= Hits 2684 2684 Misses 259 259 ```

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