Update README.md

Author: yoonjoohye

README.md

@@ -1,6 +1,6 @@
 # Ondaum Client
 
-Hello👋 This is team Ondaum. ***Ondaum*** is a pure Korean word, meaning “a warm and genuine self”
+Hello👋 This is team Ondaum. ***Ondaum*** is a pure Korean word, meaning ***'a warm and genuine self'***
 
 We want to help people around the world live healthier lives by being with Um, an AI professional psychological counseling companion, anytime and anywhere.