How to use partials with modifiers

Discussion: https://github.com/statamic/cms/discussions/11304

The [docs page](https://statamic.dev/tags/partial) about the partial tag is missing a part about sub-expressions and how to use the partial tag with modifiers:

```antlers
{{ { partial:component } | spaceless }}
```

I would do a PR myself, but am unsure about a Blade demo or the correct wording.