Update button label to 'See available versions' in docs homepage (#45571)

* Change button

* Change button

Co-authored-by: Dipesh Rawat <[email protected]>

---------

Co-authored-by: Dipesh Rawat <[email protected]>

Author: steve-hardman

content/en/docs/home/_index.md

@@ -64,4 +64,6 @@ cards:
 - name: about
   title: About the documentation
   description: This website contains documentation for the current and previous 4 versions of Kubernetes.
+  button: "See available versions"
+  button_path: "/docs/home/supported-doc-versions"
 ---

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

@@ -2,10 +2,7 @@
 title: Available Documentation Versions
 content_type: custom
 layout: supported-versions
-card:
-  name: about
-  weight: 10
-  title: Available Documentation Versions
+weight: 10
 ---
 
 This website contains documentation for the current version of Kubernetes
@@ -14,4 +11,4 @@ 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.
+which versions of Kubernetes are officially supported, and for how long.