nova: Fix comments for _config_nova_apache_wsgi

Comments cleanup.

Change-Id: I02748b906f7bb75240bc4e5259005cd72ef49f6b
diff --git a/lib/nova b/lib/nova
index f5ab201..b4a5fb1 100644
--- a/lib/nova
+++ b/lib/nova
@@ -247,7 +247,7 @@
     sudo rm -f $(apache_site_config_for nova-metadata)
 }
 
-# _config_nova_apache_wsgi() - Set WSGI config files of Keystone
+# _config_nova_apache_wsgi() - Set WSGI config files of Nova API
 function _config_nova_apache_wsgi {
     sudo mkdir -p $NOVA_WSGI_DIR