Fix search in docs by adding jquery to docs conf

[braingram]

Applies the same fix as in: https://github.com/spacetelescope/jwst/pull/7524

Fix search in docs by including jquery in the docs conf file.

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 (12a4c3a) 64.71% compared to head (36a63b0) 64.75%. Report is 1 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #241 +/- ## ========================================== + Coverage 64.71% 64.75% +0.03% ========================================== Files 102 102 Lines 5668 5674 +6 ========================================== + Hits 3668 3674 +6 Misses 2000 2000 ```

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