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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master

Details
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http://git.postgresql.org/pg/commitdiff/d42f67c52af19c4301561608f8f5dba6ae504c67

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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