Update I18nFileGenerator.kt

[ouxiaoyong]

fix order unbalanced when have multiple parameter（text direction contain right-to-left）

[ouxiaoyong]

scene：
en: getString(String name,String age) =>I am $name ,i am $age years old!
other text direction right to left language: getString(String name,String age) =>i am $name years old!,I am $age