docs: include PyArrow in quick start

[MarcoGorelli]

Currently, https://narwhals-dev.github.io/narwhals/quick_start/ only shows the output for pandas and Polars

Let's get PyArrow in there too?

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file to modify: https://github.com/narwhals-dev/narwhals/blob/main/docs/quick_start.md

contributing guide: https://github.com/narwhals-dev/narwhals/blob/main/CONTRIBUTING.md

[sTomerG]

@MarcoGorelli both https://narwhals-dev.github.io/narwhals/quick_start/ and https://github.com/narwhals-dev/narwhals/blob/main/docs/quick_start.md return 404

[juanchodpg2]

I would like to work on this.

[juanchodpg2]

@MarcoGorelli @anopsy The PR #1029 Should fix the bug from the previous #1023. It slipped by ;)