correcting minor typo (aimacode#631)

lmarti · norvig · commit a065c3b67517 · 2017-08-20T02:47:23.000-07:00
diff --git a/README.md b/README.md
@@ -12,7 +12,7 @@ Python code for the book *[Artificial Intelligence: A Modern Approach](http://ai
 This code is in Python 3.4 (Python 3.5 and later also works, but Python 2.x does not). You can [install the latest Python version](https://www.python.org/downloads) or use a browser-based Python interpreter such as [repl.it](https://repl.it/languages/python3).
 You can run the code in an IDE, or from the command line with `python -i filename.py` where the `-i` option puts you in an interactive loop where you can run Python functions.
 
-In addition to the `filename.py` files, there are also `filename.ipynb` files, which are Jupyter (formerly Ipython) notebooks. You can read these notebooks, and you can also run the code embedded with them. See [jupyter.org](http://jupyter.org/) for instructions on setting up a Jupyter notebook environment. Some modules also have `filename_apps.ipynb` files, which are notebooks for applications of the module.
+In addition to the `filename.py` files, there are also `filename.ipynb` files, which are Jupyter (formerly IPython) notebooks. You can read these notebooks, and you can also run the code embedded with them. See [jupyter.org](http://jupyter.org/) for instructions on setting up a Jupyter notebook environment. Some modules also have `filename_apps.ipynb` files, which are notebooks for applications of the module.
 
 ## Structure of the Project
 
