Is this a bug report?

yes

Have you read the Contributing Guidelines?

Yes

Environment

Environment:
OS: Windows 10
Node: 8.6.0
Yarn: 1.3.2
npm: 5.4.2
Watchman: 4.9.0
Xcode: N/A
Android Studio: Not Found

Packages: (wanted => installed)
react: 16.0.0 => 16.0.0
react-native: ^0.50.3 => 0.50.4

Steps to Reproduce

(Write your steps here:)

1. Open URL https://facebook.github.io/react-native/movies.json
2. Note that the URL returns a 404

Expected Behavior

The URL returns a simple JSON document containing a few movies.

See tutorial...
https://facebook.github.io/react-native/docs/network.html

This was working a few weeks ago. Add a redirect so github returns the correct document or update the URL in the docs.

Actual Behavior

404

Reproducible Demo

(Paste the link to an example project and exact instructions to reproduce the issue.)