face: minor code cleanups

Change-Id: I154d2ad4dfd9e12e1fa9756f74884286b31298e4
diff --git a/daemon/face/network-predicate.hpp b/daemon/face/network-predicate.hpp
index 3405f7c..965ec88 100644
--- a/daemon/face/network-predicate.hpp
+++ b/daemon/face/network-predicate.hpp
@@ -44,7 +44,7 @@
   ~NetworkPredicateBase();
 
   /**
-   * \brief Set the whitelist to "*" and clear the blacklist
+   * \brief Set the whitelist to "*" and clear the blacklist.
    */
   void
   clear();