printing error (#1568)

python_examples/train_object_detector.py

@@ -127,7 +127,7 @@ detector1 = dlib.fhog_object_detector("detector.svm")
 # In this example we load detector.svm again since it's the only one we have on
 # hand. But in general it would be a different detector.
 detector2 = dlib.fhog_object_detector("detector.svm") 
-# make a list of all the detectors you wan to run.  Here we have 2, but you
+# make a list of all the detectors you want to run.  Here we have 2, but you
 # could have any number.
 detectors = [detector1, detector2]
 image = dlib.load_rgb_image(faces_folder + '/2008_002506.jpg')