RFR: 286: Add more info about CSR in the PR's first comment

[Magnus Ihse Bursie]

On Tue, 23 Nov 2021 17:39:47 GMT, Guoxiong Li <gli at openjdk.org> wrote:

> Hi all,
> 
> This patch adds a link to the csr in the PR's first comment under **Issue**.
> And the corresponding test is added.
> 
> Thanks for taking the time to review.
> 
> Best Regards,
> -- Guoxiong

Looks good to me, but please await Erik's review as well.

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Marked as reviewed by ihse (Reviewer).

PR: https://git.openjdk.java.net/skara/pull/1244