Update nojpegca.html

It has morphosintactical mistakes and phrasal verbs translations that have single word verbs in Catalan. I've corrected the most visible ones to make the text more understandable towards Catalan speakers.

I've got a C2 European Level of Catalan due to have been studying until Grade studies in that language.
I changed "es pot deteriorar" when it's correct.
Merge pull request #11 from kylebofh/patch-1

Update nojpegca.html