docs(kb): add migration guide from MDX

[arashsheyda]

Description

closes #134

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[pkg-pr-new]

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comark

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@comark/ansi

npm i https://pkg.pr.new/comarkdown/comark/@comark/ansi@140

@comark/html

npm i https://pkg.pr.new/comarkdown/comark/@comark/html@140

@comark/nuxt

npm i https://pkg.pr.new/comarkdown/comark/@comark/nuxt@140

@comark/react

npm i https://pkg.pr.new/comarkdown/comark/@comark/react@140

@comark/svelte

npm i https://pkg.pr.new/comarkdown/comark/@comark/svelte@140

@comark/vue

npm i https://pkg.pr.new/comarkdown/comark/@comark/vue@140

commit: f5142ba

[arashsheyda]

the examples that we have in the codegroups are breaking the rendering