Update queries.md

Author: taylorotwell

queries.md

@@ -398,7 +398,7 @@ The query above will produce the following SQL:
 <a name="json-where-clauses"></a>
 ### JSON Where Clauses
 
-Laravel also supports querying JSON column types on databases that provide support for JSON column types. Currently, this includes MySQL 5.7, MariaDB 10.2.3 and Postgres. To query a JSON column, use the `->` operator:
+Laravel also supports querying JSON column types on databases that provide support for JSON column types. Currently, this includes MySQL 5.7, MariaDB 10.2.3, and Postgres. To query a JSON column, use the `->` operator:
 
     $users = DB::table('users')
                     ->where('options->language', 'en')