feat: add dev reference for build section

[dutterbutter]

What :computer:

• adds developer reference to build section

Why :hand:

• Need it

Evidence :camera:

Include screenshots, screen recordings, or console output here demonstrating that your changes work as intended

[dutterbutter]

@itsacoyote are we now only making use of ZKsync in the docs? Getting a forbidden word with zkSync usage.

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit 930817e):

https://zksync-docs-staging-5eb09--pr41-db-init-developer-re-hnlev3nh.web.app

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