Add docs version to pages_excerpts feature (#9520)

Merge pull request 9520

docs/_docs/pages.md

@@ -35,7 +35,6 @@ If you have a lot of pages, you can organize them into subfolders. The same subf
 
 You might want to have a particular folder structure for your source files that changes for the built site. With [permalinks](/docs/permalinks/) you have full control of the output URL.
 
-## Excerpts for pages
+## Excerpts for pages {%- include docs_version_badge.html version="4.1.1" -%}
 
-From Jekyll 4.1.1 onwards, one can *choose* to generate excerpts for their pages by setting `page_excerpts` to `true` in their
-config file.
+One can *choose* to generate excerpts for their pages by setting `page_excerpts` to `true` in their config file.