There is no Wikipedia entry for “text synthesis”.
However, there are Wikipedia entries for “Natural language generation” and “Automatic summarization”:
There are recently answered questions on Quora in these topics:
On Wikipedia StatSheet is referred to as “automated publishing”:
The only thing I could find on Wikipedia directly related to automated publishing was “Dynamic publishing”:
There was a Quora question on “dynamic semantic publishing” which I’ve added to your “text synthesis” topic: