Merge pull request #22994 from tspmelo/wip-prettier-lint

mgr/dashboard: Improve prettier scripts and documentation

Reviewed-by: Ernesto Puerta <epuertat@redhat.com>
Reviewed-by: Ricardo Marques <rimarques@suse.com>
Reviewed-by: Stephan Müller <smueller@suse.com>
Reviewed-by: Volker Theile <vtheile@suse.com>

diff --cc src/pybind/mgr/dashboard/frontend/package.json
Simple merge