* Capitalized "Pod" in multiple locations
This style guide states to always capitalize Pod, but in the next section it was written in lowercase in a couple places. I've capitalized them.
* Capitalized two additional instances of "Pod" as recommended by @neolit123
It was not clear what "Before you begin" meant and how it needs to be added only if the task or tutorial is version specific. Therefore, added this info in.
* Reorganize docs contrib guide
* Address first round of feedback from Brad, Jared
* Standardize on 'SIG Docs'
* Address more feedback
* Rewrites to participating.md
* Tweak navigation titles
* Document PR Wrangler
* Document SIG Docs chairperson
* Fix codeblock that shows how to use <codenew>
It was being interpreted as a Hugo shortcode.