minor fixes per Jon's comment

Change-Id: I6b0aabbd9ece8047818f23419e475ca31b20bc76
diff --git a/TestON/drivers/common/api/dockerapidriver.py b/TestON/drivers/common/api/dockerapidriver.py
index fc96682..21809aa 100644
--- a/TestON/drivers/common/api/dockerapidriver.py
+++ b/TestON/drivers/common/api/dockerapidriver.py
@@ -199,7 +199,7 @@
             Remove Docker image
         """
         if self.dockerClient.images() is []: 
-            main.log.info( "no image found with RepoTags: " + image )
+            main.log.info( "No docker image found with RepoTags: " + image )
             return main.TRUE
         else:
             try: