firebase_crashyltics Incorrect documentation (fabric.io)

[GuruJohn]

Describe the bug
The documentation shows how to setup using fabric.io but fabric.io is shuting down Ma‌y 4, 2020.

https://pub.dev/packages/firebase_crashlytics has setup instruction like:

url 'https://maven.fabric.io/public'

classpath 'io.fabric.tools:gradle:1.26.1'

There is also the issue that if you click the install tab it has a different set of instructions.

https://pub.dev/packages/firebase_crashlytics#-installing-tab- seem to say you don't need to make any changes to the build.gradle files?

Which one is correct?

To Reproduce
Goto https://pub.dev/packages/firebase_crashlytics and look

Expected behavior
Instructions on how to setup firebase_crashlytics on firebase not on fabric

[RyosukeOK]

duplicate of #2038

[TahaTesser]

Closing as duplicate of #2038