Update memcached wiki link to new location

old link 404s

memcached/content.md

@@ -28,4 +28,4 @@ $ docker run --name my-memcache -d memcached memcached -m 64
 
 This would set the memcache server to use 64 megabytes for storage.
 
-For infomation on configuring your memcached server, see the extensive [wiki](https://code.google.com/p/memcached/wiki/NewStart).
+For infomation on configuring your memcached server, see the extensive [wiki](https://github.com/memcached/memcached/wiki).