docs(elixir): Add section for more information on customizing PII data collection

Author: solnic

docs/platforms/elixir/data-management/data-collected.mdx

@@ -165,3 +165,12 @@ When using the Oban integration for background jobs:
 - Worker class name
 - Job metadata and tags
 - Max attempts and current state
+
+
+## More information
+
+To learn more about customizing PII data collection, see the following API docs:
+
+- [Configuration](https://hexdocs.pm/sentry/10.10.0/Sentry.html#module-configuration)
+- [PlugContext](https://hexdocs.pm/sentry/Sentry.PlugContext.html)
+- [Logger Handler](https://hexdocs.pm/sentry/10.10.0/Sentry.LoggerHandler.html)