Change deleteOrganizationDomain method name to delete to match other methods (#1324)

## Description

Updates the delete organization domain method (recently merged) to match
the other method names in the `organizationDomains` namespace from
`deleteOrganizationDomain` to `delete`

## Documentation

Does this require changes to the WorkOS Docs? E.g. the [API
Reference](https://workos.com/docs/reference) or code snippets need
updates.

```
[x] Yes
```

If yes, link a related docs PR and add a docs maintainer as a reviewer.
Their approval is required.

https://github.com/workos/workos/pull/42288