`cabal haddock` help text reports incorrect behavior for dependencies

**Describe the bug**

`cabal help` says:

```
λ ~/Projects/hotel-california/ mattp/basic-exec cabal haddock --help | head -n20
Build Haddock documentation.

# ... snip

Currently, documentation for dependencies is NOT built. This behavior may
change in future.

# snip ...
```

However, when I do `cabal haddock`, it *does* build docs for all dependencies.

**To Reproduce**

Run `cabal haddock` and observe how it builds documentation for dependencies

**Expected behavior**

The help text should agree with the default behavior of the program

**System information**
- Operating system
- `cabal`, `ghc` versions: `cabal-3.10.1.0`

**Additional context**