Fix release notes formatting (#7068)

Author: tillh-stripe

CHANGELOG.md

@@ -3,8 +3,8 @@
 ## XX.XX.XX - 2023-XX-XX
 
 ### Payments
-*[CHANGED] The return type for several methods in `Stripe` has changed from `T?` (nullable) to `T` to better reflect possible behavior. These methods continue to be throwing and should be wrapped in a `try/catch` block.
-*[FIXED][6977](https://github.com/stripe/stripe-android/pull/6977) Fixed an issue where `Stripe.retrievePossibleBrands()` returned incorrect results. 
+* [CHANGED] The return type for several methods in `Stripe` has changed from `T?` (nullable) to `T` to better reflect possible behavior. These methods continue to be throwing and should be wrapped in a `try/catch` block.
+* [FIXED][6977](https://github.com/stripe/stripe-android/pull/6977) Fixed an issue where `Stripe.retrievePossibleBrands()` returned incorrect results. 
 
 ## 20.27.2 - 2023-07-18