RFR: 8278532: Fix some typos in C1 comments

[Jie Fu]

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.

Looks good.

How about fixing this typo (`shoudl` --> `should`) together in this pr https://github.com/openjdk/jdk/blob/master/src/hotspot/share/opto/phaseX.hpp#L244 .
Thanks.

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