Mention ip fields in the global ordinals docs.
Although they do not support eager_global_ordinals, ip fields use global
ordinals for certain aggregations like 'terms'.
This commit also corrects a reference to the sampler aggregation.
@@ -26,9 +26,9 @@ ordinal for each segment.
Global ordinals are used if a search contains any of the following components:
-* Bucket aggregations on `keyword` and `flattened` fields. This includes
-`terms` aggregations as mentioned above, as well as `composite`, `sampler`,
-and `significant_terms`.
+* Certain bucket aggregations on `keyword`, `ip`, and `flattened` fields. This
+includes `terms` aggregations as mentioned above, as well as `composite`,
+`diversified_sampler`, and `significant_terms`.
* Bucket aggregations on `text` fields that require <<fielddata, `fielddata`>>
to be enabled.
* Operations on parent and child documents from a `join` field, including
