doc:  fix for plurality typo on bgwriter doc sentence
Reported-by: Justin Pryzby
Discussion:
Backpatch-through: 11, 12
There are considerable robustness and security risks in using background
worker processes because, being written in the <literal>C</literal> language,
they have unrestricted access to data. Administrators wishing to enable
- modules that include background worker processs should exercise extreme
+ modules that include background worker processes should exercise extreme
caution. Only carefully audited modules should be permitted to run
background worker processes.
</para>
