docs: fix typo in rules.sgml

Bruce Momjian <bruce@momjian.us>

Commit: 08c6178aa42063f4db771c3581a86049dc1c3da2
Author: Bruce Momjian <bruce@momjian.us>
Date: 2015-08-09T00:40:53Z
Releases: 9.6.0
docs:  fix typo in rules.sgml

Report by Dean Rasheed

Patch by Dean Rasheed

Backpatch through 9.5

Files

PathChange+/−
doc/src/sgml/rules.sgml modified +1 −1

Documentation touched