Readme.md in fedex-3.9.0 vs Readme.md in fedex-3.9.1

@@ -390,13 +390,13 @@
 ```
 
 # Services/Options Available
 
 ```ruby
-Fedex::Shipment::SERVICE_TYPES
-Fedex::Shipment::PACKAGING_TYPES
-Fedex::Shipment::DROP_OFF_TYPES
-Fedex::Shipment::CARRIER_CODES
+Fedex::Request::Base::SERVICE_TYPES
+Fedex::Request::Base::PACKAGING_TYPES
+Fedex::Request::Base::DROP_OFF_TYPES
+Fedex::Request::Base::CARRIER_CODES
 ````
 
 # Contributors:
 - [jazminschroeder] (http://github.com/jazminschroeder) (Jazmin Schroeder)
 - [parndt] (https://github.com/parndt) (Philip Arndt)