fix: faq crashing docs

[linear[bot]]

ZKF-1471 zksync.io. Navigation on the left side bar is broken

user in discord is reporting a bug on our website, if the FAQ is opened directly with this link [https://zksync.io/userdocs/faq.html](https://zksync.io/userdocs/faq.html) then the navigation on the left side bar is broken, clicking on something else than FAQ does not change the content

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit 04a8549):

https://zksync-js-docs--pr219-dr-zkf-1471-zksyncio-0cc5grrn.web.app

_{(expires Wed, 26 Jan 2022 14:47:19 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}

[keriat]

:tada: This PR is included in version 2.5.1 :tada:

The release is available on GitHub release

Your semantic-release bot :package::rocket: