Fix redirection of ChangeLog link (#907)

Author: sy-records

error.php

@@ -322,7 +322,7 @@
     "documentation" => "docs",
     "mailinglists" => "mailing-lists",
     "mailinglist" => "mailing-lists",
-    "changelog" => "ChangeLog-7",
+    "changelog" => "ChangeLog-8",
     "gethelp" => "support",
     "help" => "support",
     "unsubscribe" => "unsub",