[docs] Incorrect documentation for list behavior

[mrbloch]

The documentation still has a section on "Compact and loose lists" that suggests a specific edge case behavior for lists.
This behavior was changed in pandoc 2.7 and reported in #5285.

The documents merely needs to be fixed to reflect this.

Example: source md file

- Item 1


- Item 2
  - Subitem 1
  - Subitem 2

Output of pandoc 2.3.1

pandoc test.md -t json
{"blocks":[{"t":"Header","c":[1,["test",[],[]],[{"t":"Str","c":"Test"}]]},{"t":"BulletList","c":[[{"t":"Para","c":[{"t":"Str","c":"Item"},{"t":"Space"},{"t":"Str","c":"1"}]}],[{"t":"Plain","c":[{"t":"Str","c":"Item"},{"t":"Space"},{"t":"Str","c":"2"}]},{"t":"BulletList","c":[[{"t":"Plain","c":[{"t":"Str","c":"Subitem"},{"t":"Space"},{"t":"Str","c":"1"}]}],[{"t":"Plain","c":[{"t":"Str","c":"Subitem"},{"t":"Space"},{"t":"Str","c":"2"}]}]]}]]}],"pandoc-api-version":[1,17,5,1],"meta":{}}

Output of pandoc 2.10.1

pandoc test.md -t json
{"blocks":[{"t":"Header","c":[1,["test",[],[]],[{"t":"Str","c":"Test"}]]},{"t":"BulletList","c":[[{"t":"Para","c":[{"t":"Str","c":"Item"},{"t":"Space"},{"t":"Str","c":"1"}]}],[{"t":"Para","c":[{"t":"Str","c":"Item"},{"t":"Space"},{"t":"Str","c":"2"}]},{"t":"BulletList","c":[[{"t":"Plain","c":[{"t":"Str","c":"Subitem"},{"t":"Space"},{"t":"Str","c":"1"}]}],[{"t":"Plain","c":[{"t":"Str","c":"Subitem"},{"t":"Space"},{"t":"Str","c":"2"}]}]]}]]}],"pandoc-api-version":[1,21],"meta":{}}

[jgm]

Yes, this is ancient, going back to the days when I felt I needed to document discrepancies from Markdown.pl's test suite. I just deleted the section.