fix doc links examples & recipes

[paulgrotzke]

fixes #118

hey,
this will fix these behaviours

Examples:
All 'Recipe' style links on the Examples page are broken, resulting in a 404.

Recipes:
All 'Recipe' style links on the Recipes page are broken, resulting in a 404.
The 'Recipe' style links have broken images.

This behaviour could i not reproduce

Sidebar:
Pips link within Options does not navigate to the pips prop in the article.
Range link within Options does not navigate to the range prop in the article.

Links LGTM:
https://simeydotme.github.io/svelte-range-slider-pips/en/options/#pips
https://simeydotme.github.io/svelte-range-slider-pips/en/options/#range

i guess the problem why the current behaviour works on dev server is how the astro dev server is handling the case that the example.mdx links to a file inside example/**.mdx

[simeydotme]

thanks @paulgrotzke ... i'll just merge this since i havent had enough time to figure it out, or move to the new astro version 🙇