feat: upgrade docusaurus to > 3.x

[juanmanso]

Description

As part of the migration process of version 2.x to 3.x, Docusaurus provides a CLI command to check the potential issues while compiling mdx files:

npx docusaurus-mdx-checker

Running this command, a huge output was given that could be summarized with the following screenshot:

One of the errors is the bad usage of { as stated here

On this preview PR, we migrated some of the files' curly braces and this is the current summary of the CLI output:

Feel free to continue with this migration or I will when I'm back at it 🚀

Related issues

• Closes #110