Add back "edit this page" links, add note for upgrading ODFE

README.md

@@ -32,7 +32,7 @@ If you encounter problems or have questions when contributing to the documentati
 
 ## How the website works
 
-This repository contains many [Markdown](https://guides.github.com/features/mastering-markdown/) files in the `/docs` directory. Each Markdown file correlates with one page on the website.
+This repository contains many [Markdown](https://guides.github.com/features/mastering-markdown/) files organized into Jekyll "collections" (e.g. `_search-plugins`, `_opensearch`, etc.). Each Markdown file correlates with one page on the website.
 
 Using plain text on GitHub has many advantages:
 

_layouts/default.html

@@ -94,6 +94,9 @@ layout: table_wrappers
           {% endfor %}
         {% endif %}
       </nav>
+      <div class="site-footer">
+        <p class="text-small text-grey-dk-100">See a problem? Submit <a href="https://github.com/opensearch-project/documentation-website/issues">issues</a> or <a href="https://github.com/opensearch-project/documentation-website/edit/main/{{ page.path }}">edit this page</a> on <a href="https://github.com/opensearch-project/documentation-website/">GitHub</a>.</p>
+      </div>
     </div>
     <div class="copy-banner">
       <div class="container">

_upgrade-to/upgrade-to.md

@@ -29,6 +29,9 @@ Elasticsearch OSS version | Rolling upgrade path | Cluster restart upgrade path
 6.x | Upgrade to 6.8, upgrade to 7.10.2, and upgrade to OpenSearch. | Upgrade to OpenSearch.
 7.x | Upgrade to OpenSearch. | Upgrade to OpenSearch.
 
+If you are upgrading an Open Distro for Elasticsearch cluster, we recommend first upgrading to ODFE 1.13 and then upgrading to OpenSearch.
+{: .note }
+
 
 ## Upgrade Elasticsearch OSS