Fix Istio architecture link (#3885)
Fix Istio architecture link (#3885)


apache/skywalking,ascrutae/sky-walking,apache/skywalking,apache/skywalking,apache/skywalking,ascrutae/sky-walking,ascrutae/sky-walking,apache/skywalking,OpenSkywalking/skywalking,OpenSkywalking/skywalking,ascrutae/sky-walking,apache/skywalking,apache/skywalking