Do not reference react-native info in the Issue Template (#49367)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/49367

Users should use `npx react-native-community/cli info` instead.
This updates the issue template.

Changelog:
[Internal] [Changed] -

Reviewed By: cipolleschi

Differential Revision: D69533810

fbshipit-source-id: 7fd1718c96f1b160ed53cd17752f64d887143662