docs/ReferralConstraints.md in talon_one-2.5.1 vs docs/ReferralConstraints.md in talon_one-3.0.0

@@ -3,10 +3,10 @@
 ## Properties
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **start_date** | **DateTime** | Timestamp at which point the referral code becomes valid. | [optional] 
-**expiry_date** | **DateTime** | Expiry date of the referral code. Referral never expires if this is omitted, zero, or negative. | [optional] 
+**expiry_date** | **DateTime** | Expiration date of the referral code. Referral never expires if this is omitted, zero, or negative. | [optional] 
 **usage_limit** | **Integer** | The number of times a referral code can be used. `0` means no limit but any campaign usage limits will still apply.  | [optional] 
 
 ## Code Sample
 
 ```ruby