Use markdown instead of html escape chars

[anshprat]

This is a Bug Report

Problem:
The code in https://github.com/kubernetes/website/blob/master/content/en/docs/contribute/style/write-new-topic.md uses escaped HTML chars to display. The following

{{< codenew file="<RELPATH>/my-example-yaml>" >}}

is displayed using

<pre>&#123;&#123;&lt; codenew file="&lt;RELPATH&gt;/my-example-yaml&gt;" &gt;&#125;&#125;</pre>
The code can be much better than the existing escaped HTML by using markdown properly which will help in easier maintenance and reference.

Found this issue while working on #18245

Proposed Solution:
Use markdown instead of escaped chars.

Page to Update:
https://kubernetes.io/docs/contribute/style/write-new-topic/#including-code-from-another-file

[savitharaghunathan]

/language en
/lifecycle active

[bdwill]

This appears to be fixed in PR #18858