doc: PG 13 relnotes: update bool_plperl item

Reported-by: Daniel Gustafsson
Discussion: https://postgr.es/m/54F7560D-498A-4E51-BAA4-17D4AAB2AA57@yesql.se

Backpatch-through: master

diff --git a/doc/src/sgml/release-13.sgml b/doc/src/sgml/release-13.sgml
index 66fd016257535268ebb7e167d31e37b62051e351..6543f8b910064a7f484a9b66a7862d510f5554be 100644 (file)
--- a/doc/src/sgml/release-13.sgml
+++ b/doc/src/sgml/release-13.sgml
@@ -2890,9 +2890,10 @@ Author: Tom Lane 
 -->
 
       
-       Add extension bool_plperl which transforms
-       SQL booleans to/from PL/Perl booleans (Ivan
-       Panchenko) WHERE IS THIS DOCUMENTED?
+       Add extension 
+       linkend="plperl">bool_plperl
+       which transforms SQL booleans to/from PL/Perl
+       booleans (Ivan Panchenko)