Fix typo in vts_treble_sys_prop_test

Bug: 177250967
Test: atest vts_treble_sys_prop_test
Change-Id: I5d5fb465cd6f472e78380c468a4b8c0dd563de90
(cherry picked from commit 7a728bbd9055a3442ef7ac83bd2798e3cfc1b602)
diff --git a/system_property/vts_treble_sys_prop_test.py b/system_property/vts_treble_sys_prop_test.py
index 800599b..799a5d1 100644
--- a/system_property/vts_treble_sys_prop_test.py
+++ b/system_property/vts_treble_sys_prop_test.py
@@ -376,7 +376,7 @@
         self._TestPropertyTypes(
             self._ODM_PROPERTY_CONTEXTS_FILE_PATH,
             lambda typename: typename.startswith(self._VENDOR_TYPE_PREFIX) or
-            typename.startswith(self._ODM_TYPEPREFIX) or
+            typename.startswith(self._ODM_TYPE_PREFIX) or
             typename in self._VENDOR_OR_ODM_WHITELISTED_TYPES)
 
     def testExportedPlatformPropertyIntegrity(self):