Not detecting proper filetype for html file on a django project

[yujinyuz]

Does this bug happen when you install plugin without vim-polyglot? Yes

Describe the bug:
I have a sample HTML file that should have a filetype of htmldjango but currently it is detected as plain HTML.

{% load static %}
<footer class="footer">
  My sample
</footer>

I ran :autocmd BufWritePost and found that it's calling polyglot#detect#Html()

Calling polyglot#ft#FThtml() kinda fixes the issue

To Reproduce:

1. Copy the sample and save it as a .html file. It's currently detected as a plain HTML file

This is related to #553 . Opening other HTML files looks fine but those that start with {% load static %} aren't getting detected properly

[sheerun]

thanks for noticing, it should be fine now