Code & list formatting in the readme

[NickVolynkin]

• Make code examples a part of list items. Before now, they were outside of the ordered list structure.

• Use console as the lexer for code examples having both command and output lines. See https://pygments.org/docs/lexers/#pygments.lexers.shell.BashSessionLexer

[moigagoo]

@NickVolynkin Thanks for the PR!

Make code examples a part of list items. Before now, they were outside of the ordered list structure.

Unfortunately, this won't work due to MkDocs limitations: https://foliant-docs.github.io/docs/backends/mkdocs/#fenced-code-is-not-rendered-in-list-items-or-blockquotes

Please revert this change.