Summary

Move the ECS categorization fields from beta to GA

Task List

• Remove beta warning label from categorization fields docs #1067 Remove the beta warning label from the ECS categorization documentation
• Capture any outstanding discussion, possible future enhancements, etc. from https://ela.st/ecs-categories-draft. Any future proposals and accompanying discussions should be handled through the ECS RFC process.
• Add event category configuration #963 Add additional event category allowed value: configuration addressing Event Category allowed values #799
• Add event.category registry #1040 Add additional event category allowed value: registry addressing Add registry specific event.category value #1019
• Add event.category session. #1049 Add additional event category allowed value: session as mentioned in in-progress session RFC [RFC] Session RFC PR to move to Stage 2 (Draft) #935