JIRA: https://jira.spring.io/browse/INT-3950
Previously there was a mention of the `MessageGroupStore.expireMessageGroup(groupId)` which just doesn't existing
in the Framework and never has been there.
* Fix the documentation for the existing `MessageGroupStore.expireMessageGroups(timeout)`.
Although the mention there of `Control Bus` requires to have `@ManagedOperation` on the method.
* Add `@ManagedOperation` for the `MessageGroupStore.expireMessageGroups(timeout)` and confirm with the test-case: `AggregatorWithMessageStoreParserTests`
* Fix the same docs in the XSD for `<aggregator>`
* Fix other typos in the `aggregator.adoc` and `resequencer.adoc`
7628cc5439