fix: 잘못된 환경변수명 수정

Author: MU-Software

app/core/settings.py

@@ -347,9 +347,9 @@
 
 # Frontend domain settings
 FRONTEND_DOMAIN = types.SimpleNamespace(
-    main=env("FRONTEND_MAIN_DOMAIN", default="https://pycon.kr"),
-    admin=env("FRONTEND_ADMIN_DOMAIN", default="https://admin.pycon.kr"),
-    participant=env("FRONTEND_PARTICIPANT_DOMAIN", default="https://participant.pycon.kr"),
+    main=env("FRONTEND_MAIN_URL", default="https://pycon.kr"),
+    admin=env("FRONTEND_ADMIN_URL", default="https://admin.pycon.kr"),
+    participant=env("FRONTEND_PARTICIPANT_URL", default="https://participant.pycon.kr"),
 )
 
 # Django Rest Framework Settings