Release notes for comit.network

Upgrade to a new docusaurus version

Pick a released docusaurus version to upgrade to.
Update the docusaurus version in package.json:
1. Update @docusaurus/core
2. Update @docusaurus/preset-classic
Verify it's working properly with yarn install && yarn run start to see the generated site.
Create a PR and get it merged to master so that it triggers a Netlify deploy.