pgsql: Fix thinko in documentation of local_preload_libraries.

Fix thinko in documentation of local_preload_libraries.

Somebody added a cross-reference to shared_preload_libraries, but wrote the
wrong variable name when they did it (and didn't bother to make it a link
either).

Spotted by Christoph Anton Mitterer.

Branch
------
REL9_0_STABLE

Details
-------
http://git.postgresql.org/pg/commitdiff/f60078232d587d62c7343780ce1c470e5f5c66a5

Modified Files
--------------
doc/src/sgml/config.sgml | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)