Bug 1598414 [wpt PR 20369] - Update interfaces/navigation-timing.idl, a=testonly

Automatic update from web-platform-tests
Update interfaces/navigation-timing.idl (#20369)

Source: https://github.com/tidoust/reffy-reports/blob/fea9670/ed/idl/navigation-timing.idl
Build: https://travis-ci.org/tidoust/reffy-reports/builds/615198653
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wpt-commits: d3d50312c51ace1ba0bac95c38181658135a8f26
wpt-pr: 20369

testing/web-platform/tests/interfaces/navigation-timing.idl

@@ -13,8 +13,8 @@ interface PerformanceNavigationTiming : PerformanceResourceTiming {
     readonly        attribute DOMHighResTimeStamp domComplete;
     readonly        attribute DOMHighResTimeStamp loadEventStart;
     readonly        attribute DOMHighResTimeStamp loadEventEnd;
-    readonly        attribute NavigationType type;
-    readonly        attribute unsigned short redirectCount;
+    readonly        attribute NavigationType      type;
+    readonly        attribute unsigned short      redirectCount;
     [Default] object toJSON();
 };