Doc: remove duplicate "a" from func.sgml

Author: Shinya Kato
Discussion: https://postgr.es/m/76c01275776749a167f49379ebec57f1@oss.nttdata.com
Backpatch-through: 15, where that change was introduced

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 3ff35dfd221bee7104bb29e0bb884121951fe105..87af66757b0f2817034505b8e31464ec35e3a2b6 100644 (file)
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -18033,7 +18033,7 @@ FROM
         or array, but if it is CONDITIONAL it will not be
         applied to a single array or object. UNCONDITIONAL
         is the default.
-        If the result is a a scalar string, by default the value returned will have
+        If the result is a scalar string, by default the value returned will have
         surrounding quotes making it a valid JSON value. However, this behavior
         is reversed if OMIT QUOTES is specified.
         The ON ERROR and ON EMPTY