Working onsymfony/symfony#21081, I found a few missing references inFrameworkBundle Configuration ("framework") documentation. It's:

• framework.profiler.matcher.ips -> this option was removed:https://symfony.com/doc/4.0/profiler/matchers.html
• framework.workflow.* ->Bootstraped the documentation of Workflow options #11041
• framework.session.use_cookies ->Documented the missing session.use_cookies config option #11039
• framework.session.metadata_update_threshold ->https://symfony.com/doc/current/reference/configuration/framework.html#metadata-update-threshold
• framework.request.* ->https://symfony.com/doc/current/reference/configuration/framework.html#request
• framework.validation.static_method ->Documented the missing validation.static_method option #11040
• framework.property_info ->https://symfony.com/doc/current/reference/configuration/framework.html#property-info
• framework.cache.* ->https://symfony.com/doc/current/reference/configuration/framework.html#reference-cache