fix: text wrap in navigation sidebar and toc

[itsacoyote]

What :computer:

• Text gets truncated and ellipsed in the sidebar navigation and the TOC. This removes the truncation and allows the text to wrap.

Why :hand:

• Allows text to be more readable in the nav list

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit 1e1fbfc):

https://zksync-docs-staging-5eb09--pr47-itsacoyote-devrl-529-v9ihh4n0.web.app

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[itsacoyote]

Closing to move over to implement in the nuxt layer template.