How to change the "Files extensions list" for Single Page App

[kwokhou]

Is it possible to change the CloudFront function's "Files extensions list" that what automatically created?

lift/src/constructs/aws/SinglePageApp.ts

Line 47 in c0f260a

const code = `var REDIRECT_REGEX = /^[^.]+$|\\.(?!(css|gif|ico|jpg|jpeg|js|png|txt|svg|woff|woff2|ttf|map|json|xml|pdf)$)([^.]+$)/;

I'd like to add "docx" to the list

[mnapoli]

Hi, a pull request is welcome!