Update README.md

chanjungkim · web-flow · commit 6d41027bb902 · 2019-01-25T22:11:24.000+09:00
diff --git a/README.md b/README.md
@@ -179,7 +179,7 @@
 
 <details><summary>스터디 하실분!?</summary>
  
-- [오픈톡링크](https://open.kakao.com/o/xxxx)
+- [Discord 채널](https://discord.gg/Uf3Nr3M)
 
 </details>
 
