RFR: 8278532: Fix some typos in C1 comments

[Jie Fu]

On Fri, 10 Dec 2021 04:15:57 GMT, Hamlin Li <mli at openjdk.org> wrote:

>> This is a trivial patch to fix some typos in C1 comments.
>
> Thanks Vladimir for confirmation.

Thanks @Hamlin-Li for your update.

It would be better to change the JBS title since you also fix a typo in C2 comments.

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PR: https://git.openjdk.java.net/jdk/pull/6793