docs: extend skip rules example

[JStickler]

Fleshing this out a little, because for some reason I did NOT understand how to do this when I first read it and just copy/pasted the example. Which of course, isn't how it works....

[github-actions[bot]]

Readability report

File	AutomatedReadability	ColemanLiau	FleschKincaid	FleschReadingEase	GunningFog	LIX	SMOG
docs/sources/review/lint-prose/_index.md	$${5.62\space\color{red}(Δ+0.08)}$$	$${8.81\space\color{red}(Δ+0.06)}$$	$${7.04\space\color{red}(Δ+0.05)}$$	$${62.11\space\color{red}(Δ-0.20)}$$	$${9.60\space\color{red}(Δ+0.10)}$$	$${31.42\space\color{red}(Δ+0.59)}$$	$${10.29\space\color{red}(Δ+0.10)}$$

View metric targets

| Metric | Range | Ideal score | | --- | --- | --- | | [AutomatedReadability](https://en.wikipedia.org/wiki/Automated_readability_index) | 6 (very easy read) to 14 (extremely difficult read) | 8 or less | | [ColemanLiau](https://en.wikipedia.org/wiki/Coleman%E2%80%93Liau_index) | 6 (very easy read) to 17 (extremely difficult read) | 9 or less | | [FleschKincaid](https://en.wikipedia.org/wiki/Flesch%E2%80%93Kincaid_readability_tests) | 6 (very easy read) to 17 (extremely difficult read) | 8 or less | | [FleschReadingEase](https://en.wikipedia.org/wiki/Flesch%E2%80%93Kincaid_readability_tests) | 100 (very easy read) to 0 (extremely difficult read) | 70 or more | | [GunningFog](https://en.wikipedia.org/wiki/Gunning_fog_index) | 6 (very easy read) to 17 (extremely difficult read) | 10 or less | | [LIX](https://en.wikipedia.org/wiki/Lix_(readability_test)) | 20 (very easy read) to 60+ (extremely difficult read) | 35 or less | | [SMOG](https://en.wikipedia.org/wiki/SMOG) | 6 (very easy read) to 17 (extremely difficult read) | 10 or less |

[jdbaldry]

Thank you for the contribution!