add Ravindra as CODEOWNERS for HF

Author: xinyepeng

CODEOWNERS

@@ -39,7 +39,7 @@
 /PWGEM @alibuild @feisenhu @dsekihat @ivorobye @jokonig
 /PWGEM/Dilepton @alibuild @mikesas @rbailhac @dsekihat @ivorobye @feisenhu @hscheid @jokonig
 /PWGEM/PhotonMeson @alibuild @mikesas @rbailhac @m-c-danisch @novitzky @mhemmer-cern @dsekihat @jokonig
-/PWGHF @alibuild @vkucera @fcolamar @fgrosa @fcatalan92 @mfaggin @mmazzilli @deepathoms @NicoleBastid @hahassan7 @jpxrk @apalasciano @zhangbiao-phy @gluparel @stefanopolitano @xinyepeng
+/PWGHF @alibuild @vkucera @fcolamar @fgrosa @fcatalan92 @mfaggin @mmazzilli @deepathoms @NicoleBastid @hahassan7 @jpxrk @apalasciano @zhangbiao-phy @gluparel @stefanopolitano @xinyepeng @singhra1994
 # PWG-LF
 /PWGLF @alibuild @sustripathy @skundu692 @mpuccio
 /PWGLF/DataModel @alibuild @sustripathy @skundu692 @mpuccio @gbencedi @abmodak @fmazzasc @maciacco @dmallick2 @smaff92 @ercolessi @romainschotter