pgsql: Fix typo in test comment - Mailing list pgsql-committers

Fix typo in test comment

s/currect/correct/, accidentally introduced in 608b167f9f9.

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/1f9e3a9be539f912babd3ad58d01a4ce6aa0b85b

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