Reformat some more node comments
Reformat some more comments in node field definitions to avoid long
lines. Similar to
835d476fd21bcfb60b055941dee8c3d9559af14c, based on
additional per-field annotations that will be required.
Discussion: https://www.postgresql.org/message-id/
c5906b07-220a-a3d4-8ff3-
8ee593009424@enterprisedb.com