Updated JWT auth configuration in env.example.

env.example

@@ -151,9 +151,9 @@ QDRANT_URL=http://localhost:16333
 ### Redis
 REDIS_URI=redis://localhost:6379
 
-# For jwt auth
-AUTH_USERNAME=admin      # login name
-AUTH_PASSWORD=admin123   # password
-TOKEN_SECRET=your-key # JWT key
-TOKEN_EXPIRE_HOURS=4     # expire duration
+### For JWTt Auth
+AUTH_USERNAME=admin             # login name
+AUTH_PASSWORD=admin123          # password
+TOKEN_SECRET=your-key-for-LightRAG-API-Server           # JWT key
+TOKEN_EXPIRE_HOURS=4            # expire duration
 WHITELIST_PATHS=/login,/health  # white list