Remove imported/ references (#10004)

Signed-off-by: GuessWhoSamFoo <sfoohei@gmail.com>

layouts/docs/docsportal_home.html

@@ -45,7 +45,7 @@
       The open source project is hosted by the Cloud Native Computing Foundation (<a href="https://www.cncf.io/about">CNCF</a>).
     </p>
     <div class="aboutcolumn" markdown="1">
-      <a href="{{ "docs/imported/release/notes/" | relURL }}">Download Current Release</a>
+      <a href="{{ "docs/setup/release/notes/" | relURL }}">Download Current Release</a>
     </div>
     <div class="aboutcolumn" markdown="1">
       <a href="{{ "docs/home/supported-doc-versions/" | relURL }}">Supported Doc Versions</a>
@@ -99,4 +99,4 @@
         <div id="infobarLinks"></div>
     </div>
 </div>
-{{ end }}
+{{ end }}