Your requested review!

Guide Structure and uniformity

• Using the option to add notes in the item set helps readers to gain brief information on the most important things concerning items
• There's is no mention of an upgraded Trinket, boot enchantments and elixirs in the cheat sheet
• You don't mention Ranger's Trailblazer in the item section itself
• Structure of chapters etc. is fine yet I'm missing a brief conclusion

Readability and visualization

• I didn't check your grammar in particular but I guess it's decent enough; every now and then your sentence structure is messed up and you're using 'because' in the wrong context
• Putting the changelog in spoilers or at the end of the guide might be better
• Sumoner Spells -> Summoner Spells
• In the gameplay sections (jungling, ganking, team fights, warding) you should definitely make use of spoilers to hide some of the pictures
• Adding banners and line dividers is always appreciated

Viability of provided information

• You are supposed to explain why there are no alternative summoner spells by clarifying the strengths and advantages of the recommended ones
• I guess Greater Mark of Attack Speed and Greater Quintessence of Movement Speed are also viable alternatives worth mentioning
• Bladed Armor isn't that big of a deal, honestly; you might also want to take about a possible 0/21/9 setup (?)
• I don't see anyone banning Amumu relatively often, even not in Bronze; further cons: your engage is literally reliant on hitting "skillhots" + Amumu lacks of sustain in the jungle and can suffer from mana deficiency
• I recommend you to talk about alternative build paths in case people want to put more focus onto building defensively and utility-based; items such as Locket of the Iron Solari and Frozen Heart are insanely strong under certain circumstances and personally I'd always prefer a defensive build path over a rather damage-based one considering 1. the league you're playing in, 2. your team composition and 3. how well you're doing in the the actual game which leads to the question: can you carry the game by dealing a great amount of your team's damage or is it more useful to build defensively and being ahead as a tanky-cc-utility-bot?
• Sightstone!
• I'd talk about popular junglers like Nidalee, Rek'Sai, Gragas and Ekko as well

I hope the review was somewhat helpful. Good luck with your guide and don't hesitate to ask any questions bothering you!