[Rd] Typos in ?regex

[Korpela Mikko (MML)]

I found three little typos in the ?regex manual. Apologies for the lack of a diff, as the utility is not (yet) installed on this machine.

1. "There is a also" should probably be "There is also".
2. In the list of functions following "This section covers the regular expressions"..., "grep" appears twice. The other one should probably be "grepl".
3. In the "See Also" entry for TRE documentation, there is a spurious closing parenthesis.

- Mikko

-- 
Mikko Korpela
Chief Expert, Valuations
National Land Survey of Finland
Opastinsilta 12 C, FI-00520 Helsinki, Finland
+358 50 462 6082
www.maanmittauslaitos.fi