add redirect

Author: terakilobyte

config/redirects

@@ -1,6 +1,6 @@
 define: base https://docs.mongodb.com/php-library
 
 raw: php-library/ -> ${base}/current
-define version v1.1 v1.2 v1.3 v1.4 v1.5 v1.6 v1.7 v1.8 master
+define version v1.1 v1.2 v1.3 v1.4 v1.5 v1.6 v1.7 v1.8 v1.9 master
 symlink: upcoming -> master
-symlink: current -> v1.8
+symlink: current -> v1.9