Update members.md

Author: Junkai

content/foundation/members.md

@@ -238,6 +238,7 @@ This table shows current and emeritus members who have manually added themselves
 | julien | [Julien Le Dem](https://twitter.com/J_) | [Parquet](http://parquet.apache.org) , [Arrow](http://arrow.apache.org), [Pig](http://pig.apache.org), [Tez](http://tez.apache.org) |
 | juzhiyuan | [Zhiyuan Ju](https://twitter.com/jjzhiyuan) | [APISIX](https://apisix.apache.org) |
 | jvanzyl | [Jason van Zyl](http://www.sonatype.com/people/author/jason) |
+| jxue | Junkai Xue | [Helix](https://helix.apache.org/) |
 | jzemerick | Jeff Zemerick |
 | kamaci | [Furkan KAMACI](http://home.apache.org/~kamaci) | [Gora](http://gora.apache.org), [Nutch](http://nutch.apache.org), [ManifoldCF](https://manifoldcf.apache.org/)|
 | kanchana | Kanchana Pradeepika Welagedara |