pgsql: Fix wording - Mailing list pgsql-committers

Fix wording

Branch
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REL_13_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/d3ad6566a130988af7693267bc8605b86772618c

Modified Files
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doc/src/sgml/rules.sgml                     | 2 +-
src/backend/utils/adt/rangetypes_selfuncs.c | 2 +-
src/backend/utils/adt/rangetypes_spgist.c   | 6 +++---
src/bin/pg_resetwal/pg_resetwal.c           | 4 ++--
4 files changed, 7 insertions(+), 7 deletions(-)