SF bug #762990: Awful Grammar in Python Tutorial

Fixed a nit.

Doc/tut/tut.tex

@@ -3538,7 +3538,7 @@ used to the benefit of the program, since aliases behave like pointers
 in some respects.  For example, passing an object is cheap since only
 a pointer is passed by the implementation; and if a function modifies
 an object passed as an argument, the caller will see the change --- this
-obviates the need for two different argument passing mechanisms as in
+eliminates the need for two different argument passing mechanisms as in
 Pascal.