update text

Author: sdgilley

articles/machine-learning/how-to-create-labeling-projects.md

@@ -160,7 +160,7 @@ Use these steps to add one or more labels to a project:
 1. In the form, add your new label and choose how to proceed.  Since you've changed the available labels for an image, you choose how to treat the already labeled data:
     * Start over, removing all existing labels.  Choose this option if you want to wipe out all existing labels so that the full set can be used to tag all images.
     * Start over, keeping all existing labels.  Choose this option to mark all data as unlabeled, but keep the existing labels as a default tag for images that had been labeled.
-    * Continue, keeping all existing labels. Choose this option to keep all data already labeled as is, and use the new label only for data not yet classified.
+    * Continue, keeping all existing labels. Choose this option to keep all data already labeled as is, and start using the new label for data not yet classified.
 1. Modify your instructions page as necessary for the new label(s).
 1. Once you have added all new labels, at the top of the page select **Start**  to restart the project.