SRVCOM-2432 change serverless product title

Author: gabriel-rh

_distro_map.yml

@@ -278,7 +278,7 @@ microshift:
       name: '4.13'
       dir: microshift/4.13
 openshift-serverless:
-  name: OpenShift Serverless
+  name: Red Hat OpenShift Serverless
   author: OpenShift documentation team <[email protected]>
   site: commercial
   site_name: Documentation