[Feature] Guide about doctrine naming_strategy

[vasilvestre]

Is your feature request related to a problem? Please describe.
When I install the project, with the naming strategy doctrine.orm.naming_strategy.underscore the fields are not found due to other case being used than underscore.

Unknown column 's0_.cron_expression' in 'field list'

Describe the solution you'd like
I'm not sure what the fix should be but a note about this would be great.