[DOP-13900] Add note about connecting to Clickhouse cluster

[dolfinus]

Change Summary

New Clickhouse driver can autodiscover cluster nodes, and choose any of nodes while establishing new connection. Add note about enabling this feature to Prerequisites page.

Also add few small fixes to Types page.

Related issue number

Checklist

• Commit message and PR title is comprehensive
• Keep the change as small as possible
• Unit and integration tests for the changes exist
• Tests pass on CI and coverage does not decrease
• Documentation reflects the changes where applicable
• docs/changelog/next_release/<pull request or issue id>.<change type>.rst file added describing change
  (see CONTRIBUTING.rst for details.)
• My PR is ready to review.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.79%. Comparing base (1f73652) to head (ffe408d).
Report is 71 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #280   +/-   ##
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  Coverage    94.79%   94.79%           
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  Files          210      210           
  Lines         8187     8187           
  Branches      1410     1410           
========================================
  Hits          7761     7761           
  Misses         304      304           
  Partials       122      122           

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