pgsql: Fix bogus link in test comments. - Mailing list pgsql-committers

Fix bogus link in test comments.

I apparently copied-and-pasted the wrong link in commit ca8217c10.
Point it where it was meant to go.

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/f7a1a805cb178653ea2a6c8991ad73b035af953e

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