pgsql: Copy editing: fix a bunch of misspellings and poor wording.

Copy editing: fix a bunch of misspellings and poor wording.

99% of this is docs, but also a couple of comments.  No code changes.

Justin Pryzby

Discussion: https://postgr.es/m/20200919175804.GE30557@telsasoft.com

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/9436041ed848debb3d64fb5fbff6cdb35bc46d04

Modified Files
--------------
doc/src/sgml/btree.sgml                      |  2 +-
doc/src/sgml/catalogs.sgml                   |  3 ++-
doc/src/sgml/config.sgml                     | 22 +++++++++++-----------
doc/src/sgml/ddl.sgml                        |  2 +-
doc/src/sgml/func.sgml                       |  4 ++--
doc/src/sgml/libpq.sgml                      |  2 +-
doc/src/sgml/logical-replication.sgml        |  2 +-
doc/src/sgml/monitoring.sgml                 |  4 ++--
doc/src/sgml/protocol.sgml                   |  4 ++--
doc/src/sgml/ref/alter_statistics.sgml       |  3 ++-
doc/src/sgml/ref/alter_table.sgml            |  2 +-
doc/src/sgml/ref/pg_basebackup.sgml          |  4 ++--
doc/src/sgml/ref/pg_dump.sgml                |  2 +-
doc/src/sgml/ref/pg_rewind.sgml              |  4 ++--
doc/src/sgml/ref/pgbench.sgml                |  4 ++--
doc/src/sgml/ref/reindex.sgml                |  2 +-
doc/src/sgml/ref/reindexdb.sgml              |  4 ++--
doc/src/sgml/ref/vacuumdb.sgml               |  4 ++--
doc/src/sgml/runtime.sgml                    |  2 +-
doc/src/sgml/sources.sgml                    |  2 +-
src/backend/access/gin/README                |  2 +-
src/backend/utils/adt/jsonpath_exec.c        |  2 +-
src/test/regress/expected/partition_join.out |  2 +-
src/test/regress/sql/partition_join.sql      |  2 +-
24 files changed, 44 insertions(+), 42 deletions(-)