Fix typo.

Doc/library/functions.rst

@@ -916,7 +916,7 @@ are always available.  They are listed here in alphabetical order.
 .. XXX works for bytes too, but should it?
 .. function:: ord(c)
 
-   Given a string representing one Uncicode character, return an integer
+   Given a string representing one Unicode character, return an integer
    representing the Unicode code
    point of that character.  For example, ``ord('a')`` returns the integer ``97``
    and ``ord('\u2020')`` returns ``8224``.  This is the inverse of :func:`chr`.