腾讯分析源代码有bug

```
themes\next\layout\_third-party\analytics\tencent-analytics.swig
```
```
{% if theme.tencent_analytics %}

(function() {
var hm = document.createElement("script");
hm.src = "//tajs.qq.com/stats?sId={{ theme.tencent_analytics }}";
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(hm, s);
})();

{% endif %}
```

需要修改为 ：

```
{% if theme.tencent_analytics %}

(function() {
var hm = document.createElement("script");
hm.src = "http://tajs.qq.com/stats?sId={{ theme.tencent_analytics }}";
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(hm, s);
})();

{% endif %}
```

Open themes/next/layout/_third-party/analytics/tencent-analytics.swig and inspect how the Tencent Analytics script URL is assembled. Update the URL as requested and verify that the generated template uses the expected protocol while preserving the existing analytics ID interpolation.

Written by the indexing model from the issue text.