Bug 1506807 - Update metadata for failing reftest on windows. a=test-fix CLOSED TREE

--HG--
extra : amend_source : f35e7feadebfb21656f50d9ca4a8b933d8525eb6

testing/web-platform/meta/css/filter-effects/filtered-inline-is-container.html.ini

@@ -1,3 +1,3 @@
 [filtered-inline-is-container.html]
   expected:
-    if (os == "mac"): FAIL
+    if (os == "mac") or (os == "win"): FAIL