add enterprise-server@latest redirect to real latest version

Author: sarahs

lib/redirects/get-old-paths-from-permalink.js

@@ -82,6 +82,10 @@ module.exports = function getOldPathsFromPath (currentPath, languageCode, curren
       oldPaths.add(oldPath
         .replace(`/enterprise-server@${latest}`, '/enterprise-server'))
 
+      // create old path /enterprise-server@latest from new path /enterprise-server@<latest>
+      oldPaths.add(oldPath
+        .replace(`/enterprise-server@${latest}`, '/enterprise-server@latest'))
+
       if (!patterns.adminProduct.test(oldPath)) {
         // create old path /enterprise/<version>/user/foo from new path /enterprise-server@<version>/foo
         oldPaths.add(currentPath