Hyperlink to support period details (#33772)

* ref #32930 [Hyperlink to support period details added]

* Update content/en/releases/_index.md

Co-authored-by: Tim Bannister <[email protected]>

* Update content/en/docs/home/supported-doc-versions.md

Co-authored-by: Tim Bannister <[email protected]>

Co-authored-by: Tim Bannister <[email protected]>

Author: samnoonabrar

content/en/docs/home/supported-doc-versions.md

@@ -10,3 +10,8 @@ card:
 
 This website contains documentation for the current version of Kubernetes
 and the four previous versions of Kubernetes.
+
+The availability of documentation for a Kubernetes version is separate from whether
+that release is currently supported.
+Read [Support period](/releases/patch-releases/#support-period) to learn about
+which versions of Kubernetes are officially supported, and for how long.