Update for prototype feature

Author: Jessica Lin

README.md

@@ -14,8 +14,8 @@ We use sphinx-gallery's [notebook styled examples](https://sphinx-gallery.github
 Here's how to create a new tutorial or recipe:
 1. Create a notebook styled python file. If you want it executed while inserted into documentation, save the file with suffix `tutorial` so that file name is `your_tutorial.py`.
 2. Put it in one of the beginner_source, intermediate_source, advanced_source based on the level. If it is a recipe, add to recipes_source.
-2. For Tutorials (except if prototype), include it in the TOC tree at index.rst
-3. For Tutorials (except for prototype), create a thumbnail in the [index.rst file](https://github.com/pytorch/tutorials/blob/master/index.rst) using a command like `.. customcarditem:: beginner/your_tutorial.html`. For Recipes, create a thumbnail in the [recipes_index.rst](https://github.com/pytorch/tutorials/blob/master/recipes_source/recipes_index.rst)
+2. For Tutorials (except if it is a prototype feature), include it in the TOC tree at index.rst
+3. For Tutorials (except if it is a prototype feature), create a thumbnail in the [index.rst file](https://github.com/pytorch/tutorials/blob/master/index.rst) using a command like `.. customcarditem:: beginner/your_tutorial.html`. For Recipes, create a thumbnail in the [recipes_index.rst](https://github.com/pytorch/tutorials/blob/master/recipes_source/recipes_index.rst)
 
 In case you prefer to write your tutorial in jupyter, you can use [this script](https://gist.github.com/chsasank/7218ca16f8d022e02a9c0deb94a310fe) to convert the notebook to python file. After conversion and addition to the project, please make sure the sections headings etc are in logical order.