review documentation

proof read of the documentation to fix minor typos etc.
not all files were reviewed at this time.
for issue #2048
Thanks,Probably should have put this in a separate ticket!
I thought that scala does not support java 8 fully yet, as a consequence
gatling can't?

Eg. https://typesafe.com/blog/scala- 11 - has arrived

Although I see other blogs talking about use with java 8
On 31 Jul 2014 00:15, "Pierre DAL-PRA" <notifications@github.com> wrote:

> In src/sphinx/general/operations.rst:
>
> >  If you use an older version of Java, please consider upgrading, or edit the scripts and remove the unsupported options.
> >  Versions of Java older than Java 6 are not supported.
> > +Java 8 is not supported as Scala for one does not support Java 8 yet.
>
> It definitely can, I'm using a JDK8 as my main JDK and it runs Gatling
> just fine.
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/excilys/gatling/pull/2049/files#r15618761>.
>