Add Docs/ Comments feature docs

configuration.md

@@ -52,3 +52,18 @@ To enable table of contents for a pages, set `enabletoc: true`.
 ## Custom partials
 
 The partial `head-custom.html` is applied after `head.html`, you can create your own copy at `layouts/partials/head-custom.html` to overwrite it.
+
+## Docs/ Comments
+
+Create a collapsible area at the bottom of the page to embed something like Etherpad, Hedgedoc, or a commenting plugin. `HUGO_ENV` must equal production to show, otherwise a message will show instead.
+
+Overwrite this partial `layouts/partials/docscomments-content.html` with what to include.
+
+This can be disabled on your entire site:
+
+```toml
+[params]
+    disableDocsComments = true
+```
+
+For a specific page: `disableDocsComments = true`