pgsql: Avoid extra whitespace in the arguments of .

Avoid extra whitespace in the arguments of <indexterm>.

As noted by Thom Brown, this confuses the DocBook index processor; it
fails to merge entries that differ only in whitespace, and sorts them
unexpectedly as well.  Seems like a toolchain bug, but I'm not going to
hold my breath waiting for a fix.

Note: easiest way to find these is to look for double spaces in HTML.index.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/dca30da3433c40b5f92f1704c496cda052decef9

Modified Files
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doc/src/sgml/installation.sgml |    5 +++--
doc/src/sgml/libpq.sgml        |   22 ++++++++++++----------
doc/src/sgml/manage-ag.sgml    |    5 +++--
doc/src/sgml/plpgsql.sgml      |    9 ++++++---
doc/src/sgml/plpython.sgml     |    6 +++---
doc/src/sgml/pltcl.sgml        |    4 ++--
doc/src/sgml/queries.sgml      |   25 ++++++++++++++-----------
doc/src/sgml/runtime.sgml      |   14 ++++++++++----
doc/src/sgml/spi.sgml          |    7 +++++--
doc/src/sgml/syntax.sgml       |    8 ++++++--
doc/src/sgml/trigger.sgml      |    7 +++++--
doc/src/sgml/xtypes.sgml       |   13 ++++++-------
12 files changed, 75 insertions(+), 50 deletions(-)