DOCSP-23089 create top level redirect (#30)

* DOCSP-23089 create top level redirect

* Review feedback

Author: Dave Cuthbert

config/redirects

@@ -1,6 +1,8 @@
 define: prefix docs/cluster-to-cluster
-define: base https://www.mongodb.com/docs/
+define: base https://www.mongodb.com/
 define: versions master
 
-# raw: <source file> -> ${base}/<destination>
+# raw: <source file> -> ${base}/${prefix}/<destination>
+
+raw: docs/cluster-to-cluster-sync -> ${base}/${prefix}/current/