doc: Fix whitespace in markup

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 3981035634a80e53a810681c5f5d233d5c24ed1b..8c126ac1b9f03a124ffcea82650ddb417768ed81 100644 (file)
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -12889,9 +12889,9 @@ table2-mapping
    WHERE clause in SQL. A filter expression begins with
    a question mark and provides a condition in parentheses:
 
-    
+
 ? (condition)
-    
+