Create run section

THis makes it easier to see the instructions to run the example.

Author: yngtodd

examples/darts/advanced/README.rst

@@ -119,7 +119,8 @@ of the primitives must have the same number of input and output features, this w
 of features from any of your primitives. Since DARTS cannot know ahead of time what your primitives will be,
 we must specify how many features will go into our final fully connected layer of the network.
 
-Finally, to run this example:
+Run the Example
+---------------
 
 First, make sure that you can get the example data by installing `torchvision`:
 

examples/darts/uno/README.rst

@@ -62,7 +62,8 @@ data and labels of the training set, but also the data and labels of our validat
 simplicity of this tutorial, *x_search* and *target_search* are from our training set, but these 
 would normally use a separate validation set.
 
-Finally, to run this example:
+Run the Example
+---------------
 
 .. code-block::