View File links point to undefined repo

[Martinlindblad]

Bug

https://react-native-community.github.io/upgrade-helper/?from=0.61.5&to=0.64.2
The View File links point to an undefined github repo

https://github.com/undefined/raw/release/0.64.2/RnDiffApp/android/app/src/debug/java/com/rndiffapp/ReactNativeFlipper.java

React Native versions

Steps to reproduce

Describe what you expected to happen:

[Martinlindblad]

Seems to be when files are marked as done

[lucasbento]

@Martinlindblad thank you for flagging this, I'll fix it asap.