I think the original word "option" instead of "command" is better since we are talking about LIKE as an option to CREATE TABLE instead of CREATE TABLE command.
+ but any future attached or created partitions will be indexed as well.
I think just "any future partitions will be indexed as well" would suffice, no need to mention whether they were created or attached.
+ One limitation when creating new indexes on partitioned tables is that it + is not possible to use the <literal>CONCURRENTLY</literal> + qualifier when creating such a partitioned index. To avoid long
The sentence uses two different phrases, "indexes on partitioned tables" and "partitioned index", for the same thing in the same sentence. Probably it is better to leave original sentence as is.
But I think it's time for a committer to take a look at this. Please feel free to address the above comments if you agree with them. Marking this as ready for committer.