spell errors (#1585)

Fixes # .

### Description
A few sentences describing the changes proposed in this pull request.

### Checks
<!--- Put an `x` in all the boxes that apply, and remove the not
applicable items -->
- [ ] Avoid including large-size files in the PR.
- [ ] Clean up long text outputs from code cells in the notebook.
- [ ] For security purposes, please check the contents and remove any
sensitive info such as user names and private key.
- [ ] Ensure (1) hyperlinks and markdown anchors are working (2) use
relative paths for tutorial repo files (3) put figure and graphs in the
`./figure` folder
- [ ] Notebook runs automatically `./runner.sh -t <path to .ipynb file>`

Signed-off-by: Subin Erattakulangara <[email protected]>

2d_classification/mednist_tutorial.ipynb

@@ -409,7 +409,7 @@
     "1. Set total epoch number, as we have shuffle and random transforms, so the training data of every epoch is different.  \n",
     "And as this is just a get start tutorial, let's just train 4 epochs.  \n",
     "If train 10 epochs, the model can achieve 100% accuracy on test dataset. \n",
-    "1. Use DenseNet from MONAI and move to GPU devide, this DenseNet can support both 2D and 3D classification tasks.\n",
+    "1. Use DenseNet from MONAI and move to GPU device, this DenseNet can support both 2D and 3D classification tasks.\n",
     "1. Use Adam optimizer."
    ]
   },