minor doc change

Documentation/CodingGuideline.rst

@@ -72,7 +72,7 @@ QFQ content record
         # Normalize variables
         sql = SELECT '{{country:SE}}' AS _country
 
-        # List selected persons
+        # List selected persons per country
         20.sql = SELECT p.name FROM Person AS p WHERE p.country LIKE '{{country:R}}'
       }