Update index.rst

jeromtom · jeromtom · commit 1a8e5929652c · 2023-02-17T23:10:58.000+05:30
Undoing the copy-paste error that got introduced in `14abfe4`.
diff --git a/docs/index.rst b/docs/index.rst
@@ -19,7 +19,6 @@ PyBaMM documentation
 **Version**: |version|
 
 .. **Download documentation**:
-.. `PDF Version <https://numpy.org/doc/1.23/numpy-user.pdf>`_ |
 .. `Historical versions of documentation <https://numpy.org/doc/>`_
    
 **Useful links**:
