[Rd] Typo in R Help INSTALL {utils} (PR#14045)

[neilt at neiltiffin.com]

Full_Name: Neil Tiffin
Version: R version 2.10.0 (2009-10-26) 
OS: [R.app GUI 1.30 (5511) i386-apple-darwin9.8.0] 
Submission from: (NULL) (99.68.31.116)


In  the help section 'INSTALL {utils}'  half way down the page the line

Use R CMD INSTALL –help for concise usage information, including all the
available options

should have two '-' in front of help.  Therefor it should read

Use R CMD INSTALL –-help for concise usage information, including all the
available options

At least when I copied and pasted the line it did not work until I added the
second '-'.