Fix disambiguation page parsing

[HanchaiN]

It was not showing any page.

Tested page:

• '00s': page with links in named sections and 'See also' section
• '0S': page with links in a unnamed section and 'See also' section
• '0S': page with links in unnamed and named sections, tested by removing 'See also' exclusion rule

As it is, it does not show the followings:

• '0 (disambiguation)': links outside of list element
• '3 Songs': Sub-headings (the links are still displayed)
• '3-coloring': Nested lists (the links are still displayed)