pgsql: Doc: Make logical replication examples executable in bulk.

Doc: Make logical replication examples executable in bulk.

To improve the usability of logical replication examples, we need to
enable bulk copy-pasting of DML/DDL series.

Currently, output command tags and prompts disrupt this workflow. While
prompts are typically removed, converting them to comments is acceptable
here, given the multi-server context.

Additionally, ensure all examples containing operators like < and > are
wrapped in CDATA blocks to guarantee correct rendering and consistency
with other places.

Author: David G. Johnston <david.g.johnston@gmail.com>
Reviewed-by: Peter Smith <smithpb2250@gmail.com>
Discussion: https://postgr.es/m/CAKFQuwbhbL1uaDTuo9shmo1rA-fX6XGotR7qZQ7rd-ia5ZDoQA@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/3bcb554fd2154d2d9b25e942970163e581d0d5fc

Modified Files
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doc/src/sgml/logical-replication.sgml | 449 ++++++++++++++--------------------
1 file changed, 177 insertions(+), 272 deletions(-)