Update russian.php

29 - Missing Space symbol
30 - Paraphrasing of "multiplayer mod"
31 - "Cookies" are not translated. This is the name of technology.
36 - "SteamID" is the official name.
37 - Paraphrasing
39 - Missing comma
41 - Missing "эл."
54 - Paraphrasing of "ignore this message"
56 - Missing comma
58 - Missing colon
59 - Here is "сюда", not "здесь" in this action.
60 - Paraphrasing
76 - Mistake
78 - See 59
88 - New line