pgsql: fixes docs and missing initdb help option for commit 978f869b99

fixes docs and missing initdb help option for commit 978f869b99

Reported-by: Erik Rijkers

Discussion: /messages/by-id/a27e7bb60fc4c4a1fe960f7b055ba822@xs4all.nl

Backpatch-through: master

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/26d60f2a6c1c93838a49ac4d685652b1bc92f547

Modified Files
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doc/src/sgml/database-encryption.sgml | 8 ++++----
src/bin/initdb/initdb.c | 2 ++
2 files changed, 6 insertions(+), 4 deletions(-)