Merge branch 'mwaw/update_usage_ping_guide' into 'master'

Update usage ping guide

See merge request gitlab-org/gitlab!44915

doc/development/product_analytics/usage_ping.md

@@ -607,7 +607,7 @@ When adding, changing, or updating metrics, please update the [Event Dictionary'
 
 ### 5. Add new metric to Versions Application
 
-Check if new metrics need to be added to the Versions Application. See `usage_data` [schema](https://gitlab.com/gitlab-services/version-gitlab-com/-/blob/master/db/schema.rb#L147) and usage data [parameters accepted](https://gitlab.com/gitlab-services/version-gitlab-com/-/blob/master/app/services/usage_ping.rb). Any metrics added under the `counts` key are saved in the `counts` column.
+Check if new metrics need to be added to the Versions Application. See `usage_data` [schema](https://gitlab.com/gitlab-services/version-gitlab-com/-/blob/master/db/schema.rb#L147) and usage data [parameters accepted](https://gitlab.com/gitlab-services/version-gitlab-com/-/blob/master/app/services/usage_ping.rb). Any metrics added under the `counts` key are saved in the `stats` column.
 
 ### 6. Add the feature label