pgsql: Marginal comments and docs cleanup. - Mailing list pgsql-committers

Marginal comments and docs cleanup.

Fix up some imprecise comments and poor markup from ba79cb5dc.  Also try
to convert the documentation of log_min_duration_sample and friends into
passable English.

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/c8e8b2f9dfee21fa4ef1ec7da5c10e6ef706df36

Modified Files
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doc/src/sgml/config.sgml             | 97 ++++++++++++++++--------------------
src/backend/nodes/params.c           | 11 ++--
src/backend/utils/mb/stringinfo_mb.c |  2 +-
3 files changed, 49 insertions(+), 61 deletions(-)