Correct property name

Author: knonomura

docs/PythonAPIReference.files/sheet002.htm

@@ -578,7 +578,7 @@
  </tr>
  <tr height=18 style='height:13.5pt'>
   <td height=18 class=xl70 width=434 style='height:13.5pt;border-top:none;
-  border-left:none;width:326pt'>PartitionContoroller partition_controller</td>
+  border-left:none;width:326pt'>PartitionContoroller partition_info</td>
   <td class=xl81 width=454 style='border-top:none;border-left:none;width:341pt'>Read-only
   attribute</td>
   <td class=xl70 width=295 style='border-top:none;border-left:none;width:221pt'>　</td>