Fixing minor typo in basics.rst (#1984)

docs/basics.rst

@@ -164,7 +164,7 @@ load and execute the example:
 Keyword arguments
 Keyword arguments
 =================
 =================
 
 
-With a simple modification code, it is possible to inform Python about the
+With a simple code modification, it is possible to inform Python about the
 names of the arguments ("i" and "j" in this case).
 names of the arguments ("i" and "j" in this case).
 
 
 .. code-block:: cpp
 .. code-block:: cpp