Fix errors in documentation files

[sky-coderay]

beacon_chain/networking/README.md

• other → over

beacon_chain/validators/README.md

• nimbus_validator_cliant → nimbus_validator_client

docs/logging.md

• target → targeted
• an uint8 → a uint8

docs/the_nimbus_book/src/audit.md

• incoroprated → incorporated

nfuzz/README.md

• build → built

[github-actions]

Pull requests to the stable branch are not allowed.
Please open your pull request against the unstable branch.
See https://nimbus.guide/contribute.html#build-and-deploy