Update docs for augur curate

[victorlin]

Description of proposed changes

Keeping docs up to date.

Related issue(s)

Resolves #1519

Checklist

• [ ] Checks pass
• [ ] If making user-facing changes, add a message in CHANGES.md summarizing the changes in this PR
• [ ] Merge base PR #1525

[victorlin]

Going to create a separate PR using sphinx-apidoc first and use that as the base PR.

[codecov[bot]]

Codecov Report

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

Project coverage is 69.63%. Comparing base (696284c) to head (bd9feb2).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## victorlin/docs-generation #1523 +/- ## ============================================================= - Coverage 69.69% 69.63% -0.06% ============================================================= Files 74 74 Lines 7827 7812 -15 Branches 1914 1910 -4 ============================================================= - Hits 5455 5440 -15 Misses 2086 2086 Partials 286 286 ```

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