fix typo

Author: sdgilley

articles/machine-learning/tutorial-labeling.md

@@ -134,7 +134,7 @@ You have now set up your Azure resources, and configured a data labeling project
 
 ### Tag the images
 
-In this part of the tutorial, you'll switch roles from the *project administrator* to that of a *labeler*.  Anyone who has contributer access to your workspace can become a labeler.
+In this part of the tutorial, you'll switch roles from the *project administrator* to that of a *labeler*.  Anyone who has contributor access to your workspace can become a labeler.
 
 1. In [Machine Learning studio](https://ml.azure.com), select **Data labeling** on the left-hand side to find your project.