ru.cinimex.exporter.prometheus.metrics.MetricsManager.HTTPServer accessible for all kind of calls

L.S.

I see in ru.cinimex.exporter.prometheus.metrics.MetricsManager.HTTPServer in lines 36 to 38 this:
```
        HttpHandler mHandler = new HTTPMetricHandler(registry);
        server.createContext("/", mHandler);
        server.createContext(url, mHandler);
```

This means that you put it open for all kind of URL's besides the one in the variable 'url'

Why is this done?