pgsql: Fix typos and duplicate words

Fix typos and duplicate words

This fixes various typos, duplicated words, and tiny bits of whitespace
mainly in code comments but also in docs.

Author: Daniel Gustafsson <daniel(at)yesql(dot)se>
Author: Heikki Linnakangas <hlinnaka(at)iki(dot)fi>
Author: Alexander Lakhin <exclusion(at)gmail(dot)com>
Author: David Rowley <dgrowleyml(at)gmail(dot)com>
Author: Nazir Bilal Yavuz <byavuz81(at)gmail(dot)com>
Discussion: https://postgr.es/m/3F577953-A29E-4722-98AD-2DA9EFF2CBB8@yesql.se

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/950d4a2cb1d5f427dbccf70dbad510479cc4d8e6

Modified Files
--------------
contrib/amcheck/expected/check_btree.out | 2 +-
contrib/amcheck/sql/check_btree.sql | 2 +-
contrib/amcheck/verify_nbtree.c | 2 +-
doc/src/sgml/maintenance.sgml | 2 +-
doc/src/sgml/meson.build | 2 +-
src/backend/access/gin/ginbtree.c | 2 +-
src/backend/access/heap/pruneheap.c | 6 +++---
src/backend/access/nbtree/nbtutils.c | 4 ++--
src/backend/access/rmgrdesc/xactdesc.c | 2 +-
src/backend/catalog/pg_constraint.c | 2 +-
src/backend/catalog/system_functions.sql | 2 +-
src/backend/commands/amcmds.c | 2 +-
src/backend/commands/copyfrom.c | 2 +-
src/backend/commands/dbcommands.c | 4 ++--
src/backend/commands/tablecmds.c | 2 +-
src/backend/commands/vacuumparallel.c | 2 +-
src/backend/executor/execExpr.c | 2 +-
src/backend/optimizer/path/equivclass.c | 2 +-
src/backend/optimizer/path/pathkeys.c | 2 +-
src/backend/optimizer/prep/prepunion.c | 3 ++-
src/backend/parser/parse_jsontable.c | 2 +-
src/backend/parser/parse_utilcmd.c | 4 ++--
src/backend/partitioning/partbounds.c | 6 +++---
src/backend/partitioning/partprune.c | 2 +-
src/backend/postmaster/launch_backend.c | 2 +-
src/backend/postmaster/walsummarizer.c | 2 +-
src/backend/replication/logical/slotsync.c | 2 +-
src/backend/replication/walsender.c | 2 +-
src/backend/statistics/dependencies.c | 4 ++--
src/backend/storage/aio/read_stream.c | 6 +++---
src/backend/storage/buffer/bufmgr.c | 2 +-
src/backend/storage/lmgr/lock.c | 2 +-
src/backend/storage/lmgr/proc.c | 2 +-
src/backend/utils/adt/jsonpath_exec.c | 4 ++--
src/backend/utils/adt/multirangetypes.c | 2 +-
src/backend/utils/adt/selfuncs.c | 2 +-
src/backend/utils/mmgr/aset.c | 4 ++--
src/backend/utils/mmgr/bump.c | 4 ++--
src/backend/utils/mmgr/generation.c | 4 ++--
src/bin/pg_basebackup/bbstreamer_tar.c | 2 +-
src/bin/pg_combinebackup/pg_combinebackup.c | 2 +-
src/bin/pg_combinebackup/reconstruct.c | 2 +-
src/bin/pg_upgrade/t/004_subscription.pl | 2 +-
src/common/unicode_category.c | 2 +-
src/include/access/heapam_xlog.h | 10 +++++-----
src/include/common/hashfn_unstable.h | 2 +-
src/include/lib/radixtree.h | 6 +++---
src/include/nodes/pathnodes.h | 2 +-
src/include/nodes/primnodes.h | 2 +-
src/include/storage/proc.h | 2 +-
src/interfaces/libpq/fe-cancel.c | 2 +-
src/interfaces/libpq/fe-secure-openssl.c | 2 +-
src/test/isolation/expected/temp-schema-cleanup.out | 4 ++--
src/test/isolation/specs/temp-schema-cleanup.spec | 2 +-
src/test/modules/test_resowner/test_resowner_many.c | 2 +-
src/test/regress/expected/aggregates.out | 2 +-
src/test/regress/expected/copy.out | 4 ++--
src/test/regress/expected/foreign_key.out | 2 +-
src/test/regress/expected/publication.out | 4 ++--
src/test/regress/expected/tsdicts.out | 2 +-
src/test/regress/sql/aggregates.sql | 2 +-
src/test/regress/sql/copy.sql | 4 ++--
src/test/regress/sql/foreign_key.sql | 2 +-
src/test/regress/sql/publication.sql | 4 ++--
src/test/regress/sql/tsdicts.sql | 2 +-
src/test/subscription/t/004_sync.pl | 2 +-
src/test/subscription/t/026_stats.pl | 2 +-
67 files changed, 93 insertions(+), 92 deletions(-)