[BUG] {AsuraLightNovel} Can't see description

[Xanvial]

Effected Extension
Asura Light Novel

Describe the bug
Like mentioned before in my PR in #428 , the current implementation of Madara library doesn't support custom element for Description. In Madara library, the novel description is parsed inside summary__content > p, meanwhile on here it's directly in summary__content

To Reproduce
Steps to reproduce the behavior:

1. Go to Asura LIght Novel
2. Click on any novel
3. See that the description is not loaded

Expected behavior
Description not loaded

Screenshots
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Desktop (please complete the following information):

• OS: Android
• Application Version: 2.2.2
• Extension Version: 1.0.0

Additional context
Add any other context about the problem here.