symlink fix

Author: jordan-smith721

config/redirects

@@ -2,8 +2,7 @@ define: prefix docs/mongoid
 define: base https://www.mongodb.com/${prefix}
 define: versions v8.0 v8.1 v9.0 master
 
-symlink: current -> v9.0
-symlink: upcoming -> master
+symlink: current -> master
 
 raw: ${prefix}/ -> ${base}/current/
 raw: ${prefix}/stable -> ${base}/current/