fix compatibility on REFERENCES statement on streamalerts table creation.

lnbits/extensions/streamalerts/migrations.py

@@ -18,7 +18,7 @@ async def m001_initial(db):
     )
 
     await db.execute(
-        """
+        f"""
         CREATE TABLE IF NOT EXISTS streamalerts.Donations (
             id TEXT PRIMARY KEY,
             wallet TEXT NOT NULL,
@@ -29,7 +29,7 @@ async def m001_initial(db):
             amount FLOAT NOT NULL,
             service INTEGER NOT NULL,
             posted BOOLEAN NOT NULL,
-            FOREIGN KEY(service) REFERENCES Services(id)
+            FOREIGN KEY(service) REFERENCES {db.references_schema}Services(id)
         );
         """
     )