pgsql: Properly document that -r is only honored from the command-line.

Properly document that -r is only honored from the command-line.

This is for postgres/postmaster options.

Report by Tom Lane

Backpatch through 9.4

Branch
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REL9_4_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/f9c0434ee330bdbd07d7dc75ade849a1d01ef42e

Modified Files
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doc/src/sgml/ref/postgres-ref.sgml | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

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