[Feature Request] update Password documentation for 'Connection string'

[fr4nckdijoux]

Initial condition:

follow instruction in 'https://github.com/CGI-FR/LINO'

Action

lino dataconnector add source postgresql://postgres:@localhost:5432/postgres?sslmode=disable

Problem

warning is displayed :
"warn: password should not be included in URI, use --password-from-env or --password"

Expected

'https://github.com/CGI-FR/LINO' should be updated to remove password from connection string and replace it with parameter '--password'.With this parameter, the operator is asked to enter the password in a secured way.