fix version information in legacy metadata

build.gradle.kts

@@ -56,4 +56,5 @@ tasks.getByName<Jar>("jar") {
     }
     exclude("net")
     filesMatching("META-INF/mods.toml") { expand(project.properties) }
+    filesMatching("mcmod.info") { expand(project.properties) }
 }

src/main/resources/mcmod.info

@@ -2,7 +2,7 @@
   "modid": "betterfoliage",
   "name": "Better Foliage",
   "version": "$version",
-  "mcversion": "$mcversion",
+  "mcversion": "$mcVersion",
   "description": "Leafier leaves and grassier grass",
   "authorList" : ["octarine-noise (code)", "Meringue (textures)"]
 }]