Merge branch 'docs-update-prod-intel-stage' into 'master'

doc/api/usage_data.md

doc/development/service_ping/implement.md

doc/development/service_ping/index.md

doc/development/service_ping/metrics_dictionary.md

doc/development/service_ping/metrics_instrumentation.md

doc/development/service_ping/metrics_lifecycle.md

...development/service_ping/performance_indicator_metrics.md

doc/development/service_ping/review_guidelines.md

doc/development/service_ping/troubleshooting.md

doc/development/service_ping/usage_data.md

doc/development/snowplow/event_dictionary_guide.md

doc/development/snowplow/implementation.md

doc/development/snowplow/index.md

doc/development/snowplow/infrastructure.md

doc/development/snowplow/review_guidelines.md

doc/development/snowplow/schemas.md

doc/development/snowplow/troubleshooting.md

doc/operations/product_analytics.md

doc/user/admin_area/settings/usage_statistics.md