[Docs] breaking change: ids query no longer accepts aliases for type

[Mpdreamz]

https://www.elastic.co/guide/en/elasticsearch/reference/6.x/breaking_60_search_changes.html

Should list the fact that ids query type parameter no longer types and _type.

https://github.com/elastic/elasticsearch/blob/5.5/core/src/main/java/org/elasticsearch/index/query/IdsQueryBuilder.java#L54
https://github.com/elastic/elasticsearch/blob/6.0/core/src/main/java/org/elasticsearch/index/query/IdsQueryBuilder.java#L54

[javanna]

good catch @Mpdreamz . Relates to #26508.

[cbuescher]

Closed by #29017