cleanup minor things

src/check_sqlite.rs

@@ -72,9 +72,9 @@ WHERE
 ";
 
 pub async fn get_pool() -> Result<SqlitePool, sqlx::Error> {
-    // "sqlite://test.db"
+    // "sqlite://demo.db"
     let options = SqliteConnectOptions::new()
-        .filename("test.db")
+        .filename("demo.db")
         .create_if_missing(true);
 
     let pool = SqlitePoolOptions::new()