add more code owners (#711)

* add more code owners

* add owner

* remove comma

* add owner

Author: kevinintel

.github/CODEOWNERS

@@ -1,9 +1,13 @@
+/AgentQnA/ xuhui.ren@intel.com
 /AudioQnA/ sihan.chen@intel.com
 /ChatQnA/ liang1.lv@intel.com
 /CodeGen/ liang1.lv@intel.com
 /CodeTrans/ sihan.chen@intel.com
 /DocSum/ sihan.chen@intel.com
-/FaqGen/ letong.han@intel.com
+/DocIndexRetriever/ xuhui.ren@intel.com chendi.xue@intel.com
+/FaqGen/ xinyao.wang@intel.com
 /SearchQnA/ letong.han@intel.com
 /Translation/ liang1.lv@intel.com
 /VisualQnA/ liang1.lv@intel.com
+/ProductivitySuite/ hoong.tee.yeoh@intel.com
+/*/ liang1.lv@intel.com