Change:
This includes but effects multiple docs.
This issue was also raised on the repository, see:
What's needed to fix this? Are the broken headers being generated automatically somewhere?
- The warning section is pre-pended to the md docs from the following script The fixes this issue, updating this script and all the docs... However, there is an open question as to whether "old" docs should be removed from this repo, which has prevented this PR from being merged.

Discussion:
const unversionedWarningPre = ` <!-- BEGIN STRIP_FOR_RELEASE --> <del> <img src="http://kubernetes.io/img/warning.png" alt="WARNING" </del> <ins> <img src="http://kubernetes.io/kubernetes/img/warning.png" alt="WARNING" </ins> width="25" height="25"> <del> <img src="http://kubernetes.io/img/warning.png" alt="WARNING" </del> <ins> <img src="http://kubernetes.io/kubernetes/img/warning.png" alt="WARNING" </ins> width="25" height="25"> <del> <img src="http://kubernetes.io/img/warning.png" alt="WARNING" </del> <ins> <img src="http://kubernetes.io/kubernetes/img/warning.png" alt="WARNING" </ins> width="25" height="25"> <del> <img src="http://kubernetes.io/img/warning.png" alt="WARNING" </del> <ins> <img src="http://kubernetes.io/kubernetes/img/warning.png" alt="WARNING" </ins> width="25" height="25"> <del> <img src="http://kubernetes.io/img/warning.png" alt="WARNING" </del> <ins> <img src="http://kubernetes.io/kubernetes/img/warning.png" alt="WARNING" </ins> width="25" height="25"> <h2>PLEASE NOTE: This document applies to the HEAD of the source tree</h2>

` <!-- BEGIN STRIP_FOR_RELEASE --> <del> <img src="http://kubernetes.io/img/warning.png" alt="WARNING" </del> <ins> <img src="http://kubernetes.io/kubernetes/img/warning.png" alt="WARNING" </ins> width="25" height="25"> <del> <img src="http://kubernetes.io/img/warning.png" alt="WARNING" </del> <ins> <img src="http://kubernetes.io/kubernetes/img/warning.png" alt="WARNING" </ins> width="25" height="25"> <del> <img src="http://kubernetes.io/img/warning.png" alt="WARNING" </del> <ins> <img src="http://kubernetes.io/kubernetes/img/warning.png" alt="WARNING" </ins> width="25" height="25"> <del> <img src="http://kubernetes.io/img/warning.png" alt="WARNING" </del> <ins> <img src="http://kubernetes.io/kubernetes/img/warning.png" alt="WARNING" </ins> width="25" height="25"> <del> <img src="http://kubernetes.io/img/warning.png" alt="WARNING" </del> <ins> <img src="http://kubernetes.io/kubernetes/img/warning.png" alt="WARNING" </ins> width="25" height="25"> <h2>PLEASE NOTE: This document applies to the HEAD of the source tree</h2>

[A more robust example that follows Elasticsearch best-practices of separating nodes concern is also available](production_cluster/README.md). <del> <img src="http://kubernetes.io/img/warning.png" alt="WARNING" width="25" height="25"> Current pod descriptors use an `emptyDir` for storing data in each data node container. This is meant to be for the sake of simplicity and [should be adapted according to your storage needs](../../docs/design/persistent-storage.md). </del> <ins> <img src="http://kubernetes.io/kubernetes/img/warning.png" alt="WARNING" width="25" height="25"> Current pod descriptors use an `emptyDir` for storing data in each data node container. This is meant to be for the sake of simplicity and [should be adapted according to your storage needs](../../docs/design/persistent-storage.md). </ins> ## Docker image

This is enforced throughout this document. <del> <img src="http://kubernetes.io/img/warning.png" alt="WARNING" width="25" height="25"> Current pod descriptors use an `emptyDir` for storing data in each data node container. This is meant to be for the sake of simplicity and [should be adapted according to your storage needs](../../../docs/design/persistent-storage.md). </del> <ins> <img src="http://kubernetes.io/kubernetes/img/warning.png" alt="WARNING" width="25" height="25"> Current pod descriptors use an `emptyDir` for storing data in each data node container. This is meant to be for the sake of simplicity and [should be adapted according to your storage needs](../../../docs/design/persistent-storage.md). </ins> ## Docker image

<!-- BEGIN STRIP_FOR_RELEASE --> <del> <img src="http://kubernetes.io/img/warning.png" alt="WARNING" </del> <ins> <img src="http://kubernetes.io/kubernetes/img/warning.png" alt="WARNING" </ins> width="25" height="25"> <del> <img src="http://kubernetes.io/img/warning.png" alt="WARNING" </del> <ins> <img src="http://kubernetes.io/kubernetes/img/warning.png" alt="WARNING" </ins> width="25" height="25"> <del> <img src="http://kubernetes.io/img/warning.png" alt="WARNING" </del> <ins> <img src="http://kubernetes.io/kubernetes/img/warning.png" alt="WARNING" </ins> width="25" height="25"> <del> <img src="http://kubernetes.io/img/warning.png" alt="WARNING" </del> <ins> <img src="http://kubernetes.io/kubernetes/img/warning.png" alt="WARNING" </ins> width="25" height="25"> <del> <img src="http://kubernetes.io/img/warning.png" alt="WARNING" </del> <ins> <img src="http://kubernetes.io/kubernetes/img/warning.png" alt="WARNING" </ins> width="25" height="25"> <h2>PLEASE NOTE: This document applies to the HEAD of the source tree</h2>