Fix a few typos in user & suite guides

[kinow]

Re-reading the user and suite guides, and taking notes of possible typos (keep in mind English is not my first language :-) ) Let me know if I must update the branch removing any of the typos listed here.

Cheers
Bruno

[hjoliver]

Thanks Bruno, that's great (it seems English must not be my first language either, from the typos you've found!)

[hjoliver]

No need for a second review on this one.

[kinow]

Thanks Hilary! It is the second time I am reading the docs, and I really like the structure and find it easy to read.

The only thing I am missing is somewhere to refer to find the possible environment variables. Something similar to this page from the Jenkins CI project.

[hjoliver]

I'm not sure if you mean environment variables that affect the operation of the suite server program, or those provided by the server program that can be used in task job environments? Of the former, there aren't any really; of the latter, see the sub-section "Task Execution Environment" and under that, "Task Job Script variables". (This could all be improved, I'm sure ... maybe when we do this: #2651

[kinow]

I was referring to the latter, and the "Task Job Script variables" is exactly what I needed! Thanks!!

[hjoliver]

(You can of course also add arbitrary variables yourself, in task definitions, to task job environments)