Incorrect example code snippet in the Autoscalers section of the docs index page

[marcelovilla]

Describe the issue:

In the Autoscalers section of the docs index page, there's an incorrect example code snippet on how to create a KubeCluster and scale it. Here is screenshot:

Initially, I thought it was a duplicate snippet but @jacobtomlinson has pointed out it's actually an incorrect example and it should depict how to adapt a cluster to use the autoscaler.

[jacobtomlinson]

Thanks! The example isn't a duplicate, but it is broken. See my comment on your PR https://github.com/dask/dask-kubernetes/pull/905#pullrequestreview-2276582837

[marcelovilla]

@jacobtomlinson ah, I see! That makes sense. Let me update the issue title and description to better convey this.