fix astro-code classes by Astro

[rishi-raj-jain]

fix https://capgo.app/blog/automatic-capacitor-android-build-github-action/ not displaying code css properly

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[rishi-raj-jain]

Basically now astro adds their own css to the pre code blocks and that's why this was caused.

Code in Astro that does it: https://github.com/withastro/astro/blob/main/packages/astro/components/shiki-themes.js#L8

Where on the website it reflects