update zirain's association (kubernetes#1127)

WORKING-GROUPS.md

@@ -2,9 +2,10 @@
 
 Most community activity is organized into *working groups*.
 
-* [Working group meetings](#working-group-meetings)
-* [Working group leads](#working-group-leads)
-* [Getting in touch](#getting-in-touch)
+- [Istio Working Groups](#istio-working-groups)
+  - [Working group meetings](#working-group-meetings)
+  - [Working group leads](#working-group-leads)
+  - [Getting in touch](#getting-in-touch)
 
 Working groups follow the [contributing](CONTRIBUTING.md) guidelines although each of these groups may operate a little differently depending on
 their needs and workflow.
@@ -75,7 +76,7 @@ Each working group has one or more leads which coordinate the activities of the
                                                                                 | [Limin Wang](https://github.com/liminw)            | Google     | Security
 <img width="30px" src="https://avatars0.githubusercontent.com/u/1016047?s=400&v=4">  | [Lizan Zhou](https://github.com/lizan)             | Tetrate    | Networking - Data Plane, Security
 <img width="30px" src="https://github.com/avatars/u/19473391?s=400&v=4">  | [Greg Hanson](https://github.com/GregHanson)       | Solo.io     | Product Security
-&nbsp;                                                                               | [Jianpeng He](https://github.com/zirain)           | Huawei     | Extensions and Telemetry
+&nbsp;                                                                               | [Jianpeng He](https://github.com/zirain)           | Tetrate     | Extensions and Telemetry
 ## Getting in touch
 
 If you'd like to reach out to the working group leads, please drop a note to [wg-leads@discuss.istio.io](mailto:wg-leads@discuss.istio.io).