Fix broken link in inception readme

Fixed #529

inception/README.md

@@ -479,7 +479,7 @@ your custom data set. Please see the associated options and assumptions behind
 this script by reading the comments section of [`build_image_data.py`]
 (inception/data/build_image_data.py). Also, if your custom data has a different 
 number of examples or classes, you need to change the appropriate values in
-[`imagenet_data.py`](imagenet_data.py).
+[`imagenet_data.py`](inception/imagenet_data.py).
 
 The second piece you will need is a trained Inception v3 image model. You have
 the option of either training one yourself (See [How to Train from Scratch]