RFR: 8278532: Fix some typos in C1 comments

[Hamlin Li]

On Fri, 10 Dec 2021 02:27:23 GMT, Hamlin Li <mli at openjdk.org> wrote:

> This is a trivial patch to fix some typos in C1 comments.

Thanks for your opinion.
Normally, we don't include code in many areas in one pr unless there are strong reasons to do that. I will hold on for another reviewer's opinion.

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