doc: Fix whitespace in syntax.

Back-patch to 10.

Author: Andreas Karlsson
Discussion: https://postgr.es/m/043acae2-a369-b7fa-be48-1933aa2e82d1%40proxel.se

diff --git a/doc/src/sgml/ref/insert.sgml b/doc/src/sgml/ref/insert.sgml
index cc9b94617e9831d8878ada192ecb305e3f4078d7..49c70aa526343f990ca814048294af7def1ef144 100644 (file)
--- a/doc/src/sgml/ref/insert.sgml
+++ b/doc/src/sgml/ref/insert.sgml
@@ -23,7 +23,7 @@ PostgreSQL documentation
 
 [ WITH [ RECURSIVE ] with_query [, ...] ]
 INSERT INTO table_name [ AS alias ] [ ( column_name [, ...] ) ]
-    [ OVERRIDING { SYSTEM | USER} VALUE ]
+    [ OVERRIDING { SYSTEM | USER } VALUE ]
     { DEFAULT VALUES | VALUES ( { expression | DEFAULT } [, ...] ) [, ...] | query }
     [ ON CONFLICT [ conflict_target ] conflict_action ]
     [ RETURNING * | output_expression [ [ AS ] output_name ] [, ...] ]