EOL 2.16 docs (#2891)

* EOL 2.16 docs

* update banner to reflect this does not apply to the product

* Revert "update banner to reflect this does not apply to the product"

This reverts commit 412d18f.

Author: samccann

docs/docsite/rst/conf.py

@@ -227,7 +227,7 @@
 html_context = {
     'display_github': 'True',
     'show_sphinx': False,
-    'is_eol': False,
+    'is_eol': True,
     'github_user': 'ansible',
     'github_repo': 'ansible-documentation',
     'github_version': 'devel',