[DOCS-690] Adding disclaimer for container metrics (#6045)
[DOCS-690] Adding disclaimer for container metrics (#6045)

* adding disclaimer for container metrics

* wording update
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