pgsql: docs: add COMMENT examples for new features, rename rtree

docs: add COMMENT examples for new features, rename rtree

Reported-by: Jürgen Purtz

Discussion: /messages/by-id/15ec5428-d46a-1725-f38d-44986a977abb@purtz.de

Author: Jürgen Purtz

Backpatch-through: 11

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/bfd78c0b41c5d59e6850dee412f32748da0a3c11

Modified Files
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doc/src/sgml/ref/comment.sgml | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)