Update 'plugins/customoregen.md'

plugins/customoregen.md

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 # Custom Ore Generator
 **Welcome to CustomOreGen! CustomOreGen gives you the ability to customize your SkyBlock server's cobblestone generator!**
 
-![](/media/CustomOreGenerator-Cobble.png) ![](/media/CustomOreGenerator-Ore.png)
+![](/media/CustomOreGenerator-Cobble.png) ![](/media/CustomOreGenerator-Diamond.png)
 # Features
 * Different generator presets based on permission nodes and/or island levels
 * Compatibile with BentoBox, ASkyBlock, AcidIsland, and uSkyBlock