pgsql: doc: wording improvements

doc:  wording improvements

Discussion: https://postgr.es/m/a5180360-ec04-ac58-25ce-3d795d3d1f6c@postgrespro.ru

Author: Ekaterina Kiryanova

Backpatch-through: master

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/a978565ffcec3ea31c0827fe1dcc524163bdbdfa

Modified Files
--------------
doc/src/sgml/charset.sgml            |  8 ++++----
doc/src/sgml/config.sgml             |  2 +-
doc/src/sgml/high-availability.sgml  | 13 +++++++------
doc/src/sgml/indices.sgml            |  2 +-
doc/src/sgml/logicaldecoding.sgml    |  2 +-
doc/src/sgml/monitoring.sgml         |  2 +-
doc/src/sgml/ref/merge.sgml          |  4 ++--
doc/src/sgml/ref/pg_basebackup.sgml  |  7 ++++---
doc/src/sgml/ref/pg_receivewal.sgml  |  3 ++-
doc/src/sgml/ref/pg_recvlogical.sgml |  2 +-
doc/src/sgml/ref/pg_restore.sgml     |  2 +-
doc/src/sgml/ref/pg_waldump.sgml     |  9 +++++----
doc/src/sgml/ref/pgbench.sgml        |  8 +++++---
13 files changed, 35 insertions(+), 29 deletions(-)