Add information for configuring log4j (#8039)
Add information for configuring log4j (#8039)

* add info for configuring log4j

* address review comment

Co-authored-by: Christine Chen <021c7f81bc4c0e55dbc6c4b2db8d0ea775f269a0@users.noreply.github.com>

DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core