More cleanups before release

[Kirill888]

• relax sphinx constraints
• hide more warnings coming from geobox display logic
• formatting in docs

[codecov[bot]]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.03 :warning:

Comparison is base (02928c5) 98.24% compared to head (20cab10) 98.21%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #96 +/- ## =========================================== - Coverage 98.24% 98.21% -0.03% =========================================== Files 25 25 Lines 4205 4203 -2 =========================================== - Hits 4131 4128 -3 - Misses 74 75 +1 ``` | [Impacted Files](https://app.codecov.io/gh/opendatacube/odc-geo/pull/96?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opendatacube) | Coverage Δ | | |---|---|---| | [odc/geo/ui.py](https://app.codecov.io/gh/opendatacube/odc-geo/pull/96?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opendatacube#diff-b2RjL2dlby91aS5weQ==) | `98.12% <100.00%> (-0.03%)` | :arrow_down: | ... and [1 file with indirect coverage changes](https://app.codecov.io/gh/opendatacube/odc-geo/pull/96/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opendatacube)

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[github-actions[bot]]

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