Docs: fix query string parameter name (from Disqus comment by Brian Ros)

documentation/manual/controllers.textile

@@ -228,9 +228,9 @@ bc. public static void show(Map<String, String> client) {
 
 A query string like the following:
 
-bc. ?user.name=John&user.phone=111-1111&user.phone=222-2222
+bc. ?client.name=John&client.phone=111-1111&client.phone=222-2222
 
-Would bind the client variable to a map with two elements. The first element with key "name" and value "John", and the second with key "phone" and value "111-1111, 222-2222"
+would bind the client variable to a map with two elements. The first element with key **name** and value **John**, and the second with key **phone** and value **111-1111, 222-2222**.
 
 h3. POJO object binding