[ESS] ESS documentation needs update

[Pooya Taherkhani]

Hi there,

It seems like the ESS documentation is not up-to-date in some parts. In the
documentation, section 7.4.1, changing indentation styles, the shortkey, C-c
. is introduced for the command ess-set-syle. But we know this shortkey has
been changed to C-c C-c C-s.

Moreover, in the same section the user option ess-style-alist is
introduced, but I cannot find this variable at all as if it has been
obsolete and does not exist any more--I am not sure.

Thank you for the great ESS!

Pooya

	[[alternative HTML version deleted]]