Fixed uv_geostrophic

[kthyng]

• algorithm was incorrect, now fixed
• updated docs to mostly run (fixed xesmf issue in docs conf.py, https://github.com/conda-forge/esmf-feedstock/issues/91#issuecomment-1387279692)
• updated formatting in docs

[kthyng]

This fix addresses https://github.com/xoceanmodel/xroms/issues/63

[codecov-commenter]

Codecov Report

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

Comparison is base (0c61799) 83.93% compared to head (0a461c2) 83.93%. Report is 4 commits behind head on main.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #65 +/- ## ======================================= Coverage 83.93% 83.93% ======================================= Files 17 17 Lines 1898 1898 ======================================= Hits 1593 1593 Misses 305 305 ``` | [Flag](https://app.codecov.io/gh/xoceanmodel/xroms/pull/65/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/xoceanmodel/xroms/pull/65/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None) | `83.93% <100.00%> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None#carryforward-flags-in-the-pull-request-comment) to find out more.

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