Fix Database flyway migration path

Author: I-Al-Istannen

database/src/main/java/org/togetherjava/tjbot/db/Database.java

@@ -46,10 +46,8 @@ public Database(String jdbcUrl) throws SQLException {
         SQLiteDataSource dataSource = new SQLiteDataSource(sqliteConfig);
         dataSource.setUrl(jdbcUrl);
 
-        Flyway flyway = Flyway.configure()
-            .dataSource(dataSource)
-            .locations("/org/togetherjava/tjbot/db")
-            .load();
+        Flyway flyway =
+                Flyway.configure().dataSource(dataSource).locations("classpath:/db/").load();
         flyway.migrate();
 
         dslContext = DSL.using(dataSource.getConnection(), SQLDialect.SQLITE);