diff --git a/lib/scholar/cluster/optics.ex b/lib/scholar/cluster/optics.ex
index c5de109a..c6548b78 100644
--- a/lib/scholar/cluster/optics.ex
+++ b/lib/scholar/cluster/optics.ex
@@ -1,7 +1,8 @@
 defmodule Scholar.Cluster.OPTICS do
   @moduledoc """
-    OPTICS (Ordering Points To Identify the Clustering Structure) is an algorithm
+  OPTICS (Ordering Points To Identify the Clustering Structure) is an algorithm
   for finding density-based clusters in spatial data.
+
   It is closely related to DBSCAN, finds core sample of high density and expands
   clusters from them.  Unlike DBSCAN, keeps cluster hierarchy for a variable
   neighborhood radius.  Clusters are then extracted using a DBSCAN-like