Bad Parsing of tm::TextDocument

[richierocks]

The problem occurs in an older version of the help page.

https://www.rdocumentation.org/packages/tm/versions/0.5-10/topics/TextDocument

I see

This doesn't occur in 0.6-2 of the page.

[ludov04]

The issue is actually fixed in the new parser but old version are not being reparsed, tagging that as a duplicate of #294, as once #294 is fixed, older versions will be reparsed aswell, thanks for raising