pgsql: Update the description for the graphical installers

Update the description for the graphical installers

Remove references to "one click", as we're not supposed to call
them that anymore.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/d334b337b41e0c2e660324af2502dc9a5a691a02

Modified Files
--------------
doc/src/sgml/install-windows.sgml | 2 +-
doc/src/sgml/pgupgrade.sgml | 10 +++++-----
2 files changed, 6 insertions(+), 6 deletions(-)

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