You know basic coding which is great. But to really make your guide stand out you could get a little more creative with your coding. I don't see any problems with your cheat sheet. If someones looking to be the best they can with Tryndamere then they are going to give him the best runes and masteries that they can. You have a good amount of information in your guide but that could be expanded on. Its a pretty decent guide +1 from me(:

The guide is a bit small and lacks colour. Also your guide never mentions a Last Whisper which I think should be your third items as it does more damage to a target with 30 armor than a newly bought Bloodthirster. But if you really need that lifesteal you can always buy a last whisper and executioners calling but the lifesteal isn't that important.
As for your runes crit damage runes are the worst runes for ad as they have the least gold value, also they are very expensive ip wise. Although it may be good on Tryndamare because of his very high crit chance, but considering most people who will use this guide will not have multiple rune pages they wouldn't be able to make a rune page just for Tryndamere. I would advise you try out armor pen, crit chance or flat ad runes.
In the Summoner Spells' section you say you wouldn't need smite if jungling, but you always need smite to secure buffs and it helps in the first round through the jungle a lot too.

+1 :3

- IVIarcØ <3

great guide total stranger, could use some pro-tips and screenshots/videos