fix database url in sample env

Author: max-programming

.env.sample

@@ -2,7 +2,7 @@
 DATABASE_URL="file:db/db.sqlite"
 
 # For Production
-# DATABASE_URL="/app/db/db.sqlite"
+# DATABASE_URL="file:/app/db/db.sqlite"
 
 # For Sentry Error Handling
 VITE_SENTRY_DSN=""