Update the NoDisplay guide to be more specific with step 4

[Mr-KayZ]

Most users have multiple RAM sticks. As it stands, it simply states:
"try removing all RAM sticks and only use one. You also want to try the other sticks and/or try using other RAM slots. If this solves the issue, it is very likely a HARDWARE ISSUE with either a faulty RAM stick or a dead RAM slot on the motherboard."

I would think it would be better if we say "If you have multiple RAM slots as well as multiple RAM sticks, take the first stick and put it in slot 1, then change it to other slots and so on. Then use the second stick and test all slots as well. Do this for all slots and all RAM sticks."

Obviously, it should be better worded, but more specific.