[Rd] minor typo in biplot.rd

[William Revelle]

Dear R developers,

There is a minor typo in the documentation for biplot   (in Version 
2.12.0 as well as 2.13.0 )
"is the the dimname is NULL"  should be "if the dimname is NULL"

xlabs
A vector of character strings to label the first set of points: the 
default is to use the row dimname of x, or 1:n is the dimname is NULL.
 
if
ylabs
A vector of character strings to label the second set of points: the 
default is to use the row dimname of y, or 1:n is the dimname is NULL.
 
if
Bill


>  sessionInfo()
R version 2.13.0 Under development (unstable) (2010-11-05 r53534)
Platform: i386-apple-darwin9.8.0/i386 (32-bit)

locale:
[1] en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base    

other attached packages:
[1] psych_1.0-93

loaded via a namespace (and not attached):
[1] tools_2.13.0
-- 
William Revelle		http://personality-project.org/revelle.html
Professor			http://personality-project.org
Department of Psychology             http://www.wcas.northwestern.edu/psych/
Northwestern University	http://www.northwestern.edu/
Use R for psychology                       http://personality-project.org/r
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