use lower case x (#1593)

bkmgit · holly1238 · web-flow · commit b25c905f9946 · 2021-06-30T06:13:37.000-07:00
Co-authored-by: Holly Sweeney &lt;77758406+holly1238@users.noreply.github.com&gt;
diff --git a/beginner_source/data_loading_tutorial.py b/beginner_source/data_loading_tutorial.py
@@ -286,7 +286,7 @@ def __call__(self, sample):
 
         # swap color axis because
         # numpy image: H x W x C
-        # torch image: C X H X W
+        # torch image: C x H x W
         image = image.transpose((2, 0, 1))
         return {'image': torch.from_numpy(image),
                 'landmarks': torch.from_numpy(landmarks)}
