pgsql: Adjust style of some debugging macros.

Adjust style of some debugging macros.

This commit adjusts a few debugging macros to match the style of
those in pg_config_manual.h. Like commits 123661427b and
b4cbc106a6, these were discovered while reviewing Aleksander
Alekseev's proposed changes to pgindent.

Reviewed-by: Michael Paquier <michael(at)paquier(dot)xyz>
Reviewed-by: Chao Li <li(dot)evan(dot)chao(at)gmail(dot)com>
Discussion: https://postgr.es/m/aP-H6kSsGOxaB21k%40nathan

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/ba1e14134a775e56a76c1537936c61102827507f

Modified Files
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src/backend/access/nbtree/nbtsort.c | 2 +-
src/backend/utils/adt/numeric.c | 2 +-
src/include/executor/execdebug.h | 6 +++---
3 files changed, 5 insertions(+), 5 deletions(-)