Update storage-extention.md (#6564)
Update storage-extention.md (#6564)


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