add missing redirect in stg

playbooks/include/proxies-redirects.yml

@@ -353,6 +353,13 @@
     target: https://alt.stg.fedoraproject.org/$1/cloud
     when: env == 'staging'
 
+  - role: httpd/redirectmatch
+    shortname: prerelease-to-final-alt-1
+    website: alt.fedoraproject.org
+    regex: /prerelease.*$
+    target: https://alt.stg.fedoraproject.org/$1
+    when: env == 'staging'
+
 # end staging
 
   - role: httpd/redirectmatch