Fixing some typo

[rollniak]

Hi,

Instead of reviewing all the documentation, I decided to push the first part now.
I think the next time I will push more often but only with little changes.

Can you please translate this part from /docs/cbsd/how-does-a-helper-for-CBSD-image.md for me ?

sta je ovde pisac hteo da kaze? da budemo sigurni da mu trebaju svi parametri?

[mekanix]

That part needs to be written from scratch. I'll do it next week and leave this open until then.