Updated DarkRP.getLaws documentation after structure change client side.

Following 812004e, the DarkRP.getLaws no longer returns the law number in the table values clientside. The documentation used to specifically mention this but now that it is no longer the case, this part is now removed.
Merge pull request #1343 from Bo98/getlaws-docupdate

Updated DarkRP.getLaws documentation after structure change client side.