v1.0.1

fix: error message format

1.0.1 doc:

fs {
    listdir(path: string, type: int) -> Array[string]
    file_exists(path: string) -> bool
    is_file(path: string) -> bool
    is_directory(path: string) -> bool
    -- types
    BOTH = 0
    DIRS = 1
    FILES = 2
}