Adding notes on custom apis and translation

[codecov[bot]]

Codecov Report

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

Project coverage is 82.61%. Comparing base (621be2c) to head (ab321b8).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #828 +/- ## ======================================= Coverage 82.61% 82.61% ======================================= Files 85 85 Lines 4549 4549 ======================================= Hits 3758 3758 Misses 791 791 ``` | [Flag](https://app.codecov.io/gh/chidiwilliams/buzz/pull/828/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Chidi+Williams) | Coverage Δ | | |---|---|---| | [Linux](https://app.codecov.io/gh/chidiwilliams/buzz/pull/828/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Chidi+Williams) | `81.93% <ø> (+0.04%)` | :arrow_up: | | [macOS](https://app.codecov.io/gh/chidiwilliams/buzz/pull/828/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Chidi+Williams) | `81.93% <ø> (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=Chidi+Williams#carryforward-flags-in-the-pull-request-comment) to find out more.

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