doc: fs.appendFileSync wrong file argument type

[MrQubo]

Documentation says that fs.appendFileSync(file, data[, options]) accepts String or Buffer as file, but it accepts file descriptor too.

fs.appendFileSync(file, data[, options]) documentation: https://nodejs.org/dist/latest-v6.x/docs/api/fs.html#fs_fs_appendfilesync_file_data_options

[addaleax]

@MrQubo You don’t happen to be interested in changing the docs for these things yourself? That would definitely be appreciated! In any case, thank you for pointing out these issues.

[thefourtheye]

Fixed by fc96fda