Reorganize docs contrib guide (#9510)

* 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.

layouts/docs/baseof.html

@@ -30,14 +30,12 @@
         "title" : "{{ .Title }}",
         "permalink" : "{{ .Permalink }}"
         };
-        (function(d,c,j){if(!document.getElementById(j)){var pd=d.createElement(c),s;pd.id=j;pd.src=('https:'==document.location.protocol)?'https://polldaddy.com/js/rating/rating.js':'http://i0.poll.fm/js/rating/rating.js';s=document.getElementsByTagName(c)[0];s.parentNode.insertBefore(pd,s);}}(document,'script','pd-rating-js'));
         </script>
-        <a href="" onclick="window.open('https://github.com/kubernetes/website/issues/new?title=Issue%20with%20' +
-        'k8s.io'+window.location.pathname)" class="button issue">Create an Issue</a>
+        <a href="https://github.com/kubernetes/website/issues/new?title=Issue%20with%20k8s.io/{{ .URL }}%20%5BFile:%20/content/en/{{ .File.Path }}%5D" class="button issue" target="_blank">Report a problem</a>
         {{ end }}
         {{ end }}
         {{ if not .Params.noedit }}
-        <a href="{{ printf "%s#%s" ("docs/editdocs" | relURL) .Path | safeURL }}" class="button issue">Edit this Page</a>
+        <a href="https://github.com/kubernetes/website/edit/master/content/en/{{ .File.Path }}" class="button issue" target="_blank">Edit on Github</a>
         {{ end }}
       </div>
       {{ if not .Params.showcommit }}