minor internal comment about authentication.

Sam Kleinman · Sam Kleinman · commit 7d361d782a31 · 2012-06-20T08:19:37.000-04:00
diff --git a/source/core/sharding.txt b/source/core/sharding.txt
@@ -476,6 +476,9 @@ prevent the balancing process from interfering with production traffic.
 Security
 --------
 
+.. TODO migrate this content to /administration/security.txt when that
+   document exists. See DOCS-79 for tracking this document.
+
 .. note::
 
    You may always run shard clusters in trusted networking
