RFR: 8278532: Fix some typos in C1 comments

Fri Dec 10 04:09:13 UTC 2021

On Fri, 10 Dec 2021 03:33:34 GMT, Jie Fu <jiefu at openjdk.org> wrote:

> > Normally, we don't include code in many areas in one pr unless there are strong reasons to do that.
> 
> These typos belong to hotspot compiler area. So I don't think they are in different areas.

I agree. The changes are not so big to be separated. Next directories belong to compiler are: `c1, ci, code, compiler, opto`. If you find typos there, fix it here in one PR.

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