So I've seen quite a bit on some of the pages that I don't frequent normally, that there are a lot of doubles of the same link. I've seen a mention of one item, like, say, Copper multiple times in the same page. It should only be that Copper is linked the first time it is mentioned in the page, and then never again on that page, and it should be the first time mentioned, not the second, not the third, not the last.
Also, always use an internal link when you link to an item that is in this wiki, not an external link. It's just easier that way. Only use an external link when you are linking to something that is outside of the wiki. Like if you wanted to link a mention of a vanilla item and you want to link it to the Official Wiki. You use an external link for that.
Also, just a quick refresher on some basic grammar. Proper nouns are always capitalized, which means any of the items, bricks, etc... in Minecraft, vanilla or otherwise. (This does not include mechanics related to it, or things that are not explicitly named. Like how the flow of water is determined, or those little globs of lava that pop out of pools of lava. Also, words like lava and water do not need to be capitolized, UNLESS if you are talking about Lava Sources, Water Sources, Flowing Water, and Flowing Lava. Because I say so.)
Similarly, if a word is supposed to be capitalized, capitalize it in every mention of that word, not just when you feel like it.