docs: dblab-server v2.3

Vitaliy Kukharikrequested to merge
release-2.3 into master

Description

Update documentation for use dblab-server version 2.3

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  • the MR description has been reviewed
  • this MR contains text changes and they have been reviewed OR there are no texts changes
  • this MR contains GUI/CLI changes and they have been reviewed OR there are no GUI/CLI changes
  • this MR contains API changes and they have been reviewed OR there are no API changes

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