docs: correct changelog

Author: Justintime50

CHANGELOG.md

@@ -3,10 +3,10 @@
 ## v8.5.0 (2025-12-09)
 
 - Adds the following functions:
-  - `fedex.verifyBillingAddress`
-  - `fedex.generatePin`
-  - `fedex.validatePin`
-  - `fedex.validateInvoice`
+  - `fedexRegistration.registerAddress`
+  - `fedexRegistration.requestPin`
+  - `fedexRegistration.validatePin`
+  - `fedexRegistration.submitInvoice`
 - Adds `details` property of a `Rate` objec
 
 ## v8.4.1 (2025-12-01)