XDM Event Types are using descriptions instead of friendly names as values

## What are the schemas that are affected by the issue
components/behaviors/time-series.schema

## What are examples of products that are impacted by the issue
AEP

Start by inspecting components/behaviors/time-series.schema and locate the XDM event type definitions. Compare the current values with their descriptions and determine the expected friendly names; the work is done when the affected event types use those names consistently in the schema.

Written by the indexing model from the issue text.