Fix incorrect pluralization in 'These methods allows you to pass arguments...'.

railties/guides/source/active_record_querying.textile

@@ -51,7 +51,7 @@ Active Record will perform queries on the database for you and is compatible wit
 
 h3. Retrieving Objects from the Database
 
-To retrieve objects from the database, Active Record provides several finder methods. These methods allows you to pass arguments into it to perform certain queries on your database without the need of writing raw SQL.
+To retrieve objects from the database, Active Record provides several finder methods. These methods allow you to pass arguments into it to perform certain queries on your database without the need of writing raw SQL.
 
 The methods are:
 * +where+