* Divide `markdown-features/code-blocks` to smaller sections
This PR adds few more heading to split the content to small topics.
This way users like me will be able to scroll directly to the specific section, instead of reading all the documentation.
I add to read the entire section because It was not divided into sections. Not a great user experience.
* Use `<h3>` heading
* docs(v2): Add configuration parameter to allow putting Result before Editor in @docusaurus/theme-live-codeblock
* update doc
* refactor as playgroundPosition
Co-authored-by: slorber <lorber.sebastien@gmail.com>