Platform architecture of ARM Linux system can be aarch64

[adityaQure]

https://github.com/JessicaTegner/pypandoc/blob/4becb4e6734036e7eee92d180ea8e7acc7333e6f/pypandoc/pandoc_download.py#L52

$ python
>>> import platform
>>> platform.architecture()
('64bit', '')
>>> platform.uname()
uname_result(system='Linux', node='6407f0ca881a', release='5.4.0-1066-aws', version='#69~18.04.1-Ubuntu SMP Wed Feb 9 15:39:21 UTC 2022', machine='aarch64')
>>> platform.uname()[4]
'aarch64'

ARM 64 linux is also available here: https://github.com/jgm/pandoc/releases

It's a small change and will be willing to send a PR. Thanks in advance.

[JessicaTegner]

@adityaQure I would love a pr fixing this. Feel free to work on it :)

[hey24sheep]

@JessicaTegner Hi, I want to contribute to this. I have created a pull request as well to save your time.

[hey24sheep]

Hi, can you assign this to me and check my PR. The other PR didn't count towards my hacktoberfest contribution.

[JessicaTegner]

@hey24sheep after doing some investigation, I figured out why. I turns out that hacktoberfest only counts prs made after the 1st.

You are more than welcome to open more prs, as they should be counted from now on out :)

[hey24sheep]

@JessicaTegner :/ sad. So, can I close my PR and re-create it?

[JessicaTegner]

@hey24sheep indeed you can :) But I don't know how they take to that. But your call :)