pgsql: Fix whitespace issues in the man pages

Fix whitespace issues in the man pages

See 00b0c73f1f2b98a7d09de63aaa14d6498ac521ae for an explanation.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/93874ce064836e45220978e2656cbf62eba766ed

Modified Files
--------------
doc/src/sgml/ref/alter_view.sgml                |    3 +--
doc/src/sgml/ref/create_event_trigger.sgml      |    3 +--
doc/src/sgml/ref/create_view.sgml               |    3 +--
doc/src/sgml/ref/refresh_materialized_view.sgml |    3 +--
doc/src/sgml/ref/select.sgml                    |    3 +--
5 files changed, 5 insertions(+), 10 deletions(-)