refactor: 将默认路径从/leonos更改为/rc

修改多个文件中的默认路径变量，将/leonos统一替换为/rc，以简化路径命名并保持一致性

data/computercraft/lua/rom/apis/help.lua

@@ -6,7 +6,7 @@ local expect = require("cc.expect").expect
 local completion = require("cc.completion")
 
 local help = {}
-help._DEFAULT_PATH = "/leonos/help"
+help._DEFAULT_PATH = "/rc/help"
 
 function help.init()
   local vars = thread.vars()