Bug #1575746: fix typo in property() docs.

git-svn-id: http://svn.python.org/projects/python/trunk@52293 6015fed2-1504-0410-9fe1-9d1591cc4771

Doc/lib/libfuncs.tex

@@ -791,7 +791,7 @@ \section{Built-in Functions \label{built-in-funcs}}
 
 \begin{verbatim}
 class C(object):
-    def __init__(self): self.__x = None
+    def __init__(self): self._x = None
     def getx(self): return self._x
     def setx(self, value): self._x = value
     def delx(self): del self._x