Doc: copy-editing for debug_invalidate_system_caches_always description.
I came to fix "useful only useful", but the more I looked at the text
the more things I thought could be improved.
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/f9b809e7fbe36cd3fe1ce33edb277288a31da386
Modified Files
--------------
doc/src/sgml/config.sgml | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)