Update README.md

Author: davidme-stripe

README.md

@@ -1,4 +1,4 @@
 # stripe-ios-spm
 This is a lightweight Swift Package Manager mirror for the [Stripe iOS SDK](https://github.com/stripe/stripe-ios). It offers [tagged source releases](https://github.com/stripe/stripe-ios-spm/releases) for each version of the SDK.
 
-Please file issues at https://github.com/stripe/stripe-ios/issues.
+Please file issues on the `stripe-ios` issues page.