doc: fix incorrect 'literal' tags

Bruce Momjian <bruce@momjian.us>

Commit: fcf1ed48ef0b2a92f903104160f792b5c10c6595
Author: Bruce Momjian <bruce@momjian.us>
Date: 2016-08-23T16:45:33Z
Releases: 9.6.0
doc:  fix incorrect 'literal' tags

Discussion: dcc4113d-1eda-4f60-d1c5-f50eee160bad@gmail.com

Author: Alexander Law <exclusion@gmail.com>

Backpatch-through: 9.6

Files

Documentation touched