pgsql: Fix a few more duplicate words in comments - Mailing list pgsql-committers

Fix a few more duplicate words in comments

Similar to 84fd3bc14 but these ones were found using a regex that can span
multiple lines.

Author: David Rowley <dgrowleyml@gmail.com>
Discussion: https://postgr.es/m/CAApHDvrMcr8XD107H3NV=WHgyBcu=sx5+7=WArr-n_cWUqdFXQ@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/78eda9e2648ab3f8c0df0d4aca53eb0ad6399c59

Modified Files
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src/backend/storage/buffer/freelist.c | 4 ++--
src/backend/utils/adt/ruleutils.c     | 2 +-
src/interfaces/libpq/fe-connect.c     | 2 +-
3 files changed, 4 insertions(+), 4 deletions(-)