[Rd] Regenerate news feeds?

[Tim Taylor]

The news feeds (e.g. 
https://developer.r-project.org/blosxom.cgi/R-devel/NEWS) have some 
stray "\abbr" floating around. Do they need generating with a more 
recent version of R-devel?

I've run tools::Rd2txt on https://svn.r-project.org/R/trunk/doc/NEWS.Rd 
and r85550 does seem to remove these abberations (compared to the same 
function calling on an unpatched 4.3.2 where they remain).

Tim