pgsql: Improve whitespace in without_overlaps test

Improve whitespace in without_overlaps test

Make some indentation better and more consistent.  Extracted from
another patch with some actual test changes.

Discussion:
https://www.postgresql.org/message-id/flat/CA+renyUApHgSZF9-nd-a0+OPGharLQLO=mDHcY4_qQ0+noCUVg@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/888d4523f0c2f7e410739feff3ff97c5f3b9b3ea

Modified Files
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src/test/regress/expected/without_overlaps.out | 68 ++++++++++++++------------
src/test/regress/sql/without_overlaps.sql      | 68 ++++++++++++++------------
2 files changed, 74 insertions(+), 62 deletions(-)