[PATCH] README: Add Discord badge

[Daniel Axtens]

I tweaked the URL: it was printing the online count from another
server. That required changing a setting on the PW discord, which is now
also done.

Applied.

Stephen Finucane <stephen at that.guru> writes:

> Add a Discord badge that can be used to connect to the server. Link
> taken from daxtens' email to the list about the server [1].
>
> [1] https://lists.ozlabs.org/pipermail/patchwork/2021-September/007226.html
>
> Signed-off-by: Stephen Finucane <stephen at that.guru>
> Cc: Daniel Axtens <dja at axtens.net>
> ---
>  README.rst | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git README.rst README.rst
> index 7af45ce7..8d73ad78 100644
> --- README.rst
> +++ README.rst
> @@ -18,6 +18,10 @@ Patchwork
>     :target: http://patchwork.readthedocs.io/en/latest/?badge=latest
>     :alt: Documentation Status
>  
> +.. image:: https://img.shields.io/discord/591914197219016707.svg?label=&logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2
> +   :target: https://discord.gg/hGWjXVTAbB
> +   :alt: Discord
> +
>  **Patchwork** is a patch tracking system for community-based projects. It is
>  intended to make the patch management process easier for both the project's
>  contributors and maintainers, leaving time for the more important (and more
> -- 
> 2.31.1