Update Minecraft version in README

Author: SkyBlade1978

README.md

@@ -1,6 +1,6 @@
 # MMD OreSpawn
 
-OreSpawn 4 is a provider-driven world-generation engine for Minecraft 1.21.1.
+OreSpawn 4 is a provider-driven world-generation engine for Minecraft 26.2.
 It gives mods and modpacks one place to configure ores, deposit shapes, optional
 rock strata and geomes, provider-owned underground fluid deposits, biome
 palettes and world materials, flat bedrock, and bounded ore retrogen.