docs(expect): correct `expect()` docs

[codecov[bot]]

Codecov Report

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

Project coverage is 96.25%. Comparing base (a81742a) to head (cf1f6ff). Report is 16 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #5788 +/- ## ========================================== - Coverage 96.26% 96.25% -0.01% ========================================== Files 481 481 Lines 38738 38738 Branches 5615 5615 ========================================== - Hits 37291 37288 -3 - Misses 1406 1409 +3 Partials 41 41 ```

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