[Rd] Update help file (PR#9724)

[software at iangregory.com]

Full_Name: Ian Gregory
Version: latest
OS: Widnows XP
Submission from: (NULL) (58.110.163.199)


fSeries is a great package keep it up.
Need to update the help page.

Type:    help(garchOxFit)

The line: 
garchOxFit(formula.mean = ~arma(0,0), formula.var = ~garch(1,1))
Should be changed to:
garchOxFit(~garch(1,1),x)

------------------------------------------
eg.
The example in the help page reads:

Examples
## SOURCE("fSeries1.4D-GarchOxModelling")

## Not run: 
## garchOxFit -
   
   # Load Benchmark Data Set:
   data(dem2gbp)
   x = dem2gbp[, 1]
   
   # Fit GARCH(1,1):
   garchOxFit(formula.mean = ~arma(0,0), formula.var = ~garch(1,1))
## End(Not run)