feat: configs update & new security information

[keriat]

• move bug bounty inside security folder
• add list of known bugs
• add vulnerability disclosure
• add security approach
• rename and add links
• add postmortem
• add config
• edit postmortem doc
• additional fixes to postmortem doc
• fix: tiny configuration fix (to help running the checks)
• style: markdownlint config changed
• style: spelling exceptions added
• style: dead-links fixed
• style: reformatting

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit fa84b3d):

https://zksync-js-docs--pr216-reformatting-the-con-9ajoccj0.web.app

_{(expires Thu, 20 Jan 2022 21:04:23 GMT)}

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[keriat]

:tada: This PR is included in version 2.4.0 :tada:

The release is available on GitHub release

Your semantic-release bot :package::rocket: