Adapt Command Line Docs to new PicoCLI verbs

[calixtus]

Refs https://github.com/JabRef/jabref/pull/13012

Usage: jabkit [-dhpv] [COMMAND]
  -d, --debug       Enable debug output
  -h, --help        display this help message
  -p, --porcelain   Enable script-friendly output
  -v, --version     display version info
Commands:
  generate-citation-keys  Generate citation keys for entries in a .bib file.
  check-consistency       Check consistency of the database.
  fetch                   Fetch entries from a provider.
  search                  Search in a library.
  convert                 Convert between bibliography formats.
  generate-bib-from-aux   Generate small bib from aux file.
  preferences             Manage Jabkit preferences.
  pdf                     Manage PDF metadata.

[paudelritij]

new command 'pseudonymize' refs : https://github.com/JabRef/jabref/pull/13158