[FLINK-37267][table] Typo

docs/content/docs/dev/table/sql/queries/joins.md

@@ -364,7 +364,7 @@ order_1  pants             2
 order_1  hat               3
 
 -- Returns a new row for each element and its position in the array
--- assuming a Orders table with an array column `product_names`
+-- assuming a Orders table with an array column `product_names`.
 SELECT order_id, product_name, product_index
 FROM Orders 
     CROSS JOIN UNNEST(product_names)