Fix small typos: an -> and and function -> functions

docs/source/interactive/magics.rst

@@ -1,23 +1,23 b''
 =======================
 Built-in magic commands
 =======================
 
 .. note::
 
     To Jupyter users: Magics are specific to and provided by the IPython kernel.
     Whether Magics are available on a kernel is a decision that is made by
     the kernel developer on a per-kernel basis. To work properly, Magics must
     use a syntax element which is not valid in the underlying language. For
     example, the IPython kernel uses the `%` syntax element for Magics as `%`
     is not a valid unary operator in Python. However, `%` might have meaning in
     other languages.
 
 Here is the help auto-generated from the docstrings of all the available Magics
-function that IPython ships with. 
+functions that IPython ships with. 
 
-You can create an register your own Magics with IPython. You can find many user
+You can create and register your own Magics with IPython. You can find many user
 defined Magics on `PyPI <https://pypi.io>`_. Feel free to publish your own and
 use the ``Framework :: IPython`` trove classifier. 
 
 
 .. include:: magics-generated.txt