updated redirect causing build errors

Author: kyuan-mongodb

config/redirects

@@ -13,7 +13,7 @@ raw: docs/bi-connector/components/mongobischema -> ${base}/master/components/
 raw: docs/bi-connector/faq -> ${base}/master/faq/
 raw: docs/bi-connector/release-notes -> ${base}/master/release-notes/
 
-[v2.1]: docs/bi-connector/${version} -> docs/bi-connector/current/
+[v2.1]: docs/bi-connector/${version} -> ${base}/current/
 
 [v1.1]: docs/bi-connector/${version}/reference/mongosqld -> ${base}/${version}/components/
 [v1.1]: docs/bi-connector/${version}/tutorial/connecting -> ${base}/${version}/