pgsql: doc: add links to Postgres features intro

doc: add links to Postgres features intro

Reported-by: Elena Indrupskaya

Discussion: /messages/by-id/1a666b2e-d373-1c94-1005-1700e023670d@postgrespro.ru

Backpatch-through: master

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/4d42b4edc6def25cab63894a2d351d597606492d

Modified Files
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doc/src/sgml/intro.sgml | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)