Spelling vixl

[jsoref]

This is a subset of #9005, it should be easier to review/test/clear

Note: while the top level item is vixl, if a commit overlaps other directories, I'm lazily including the other changes. If they can safely be dropped from a thing and that makes it easier to merge, I'm happy to do so. By including full spanning commits, I reduce the risk of missing a related change (these tend to result in build/test failures which are painful) at the slight increase in merge conflicts for my general series (these are easy enough for me to clean up)

[Atry]

Close and reopen to trigger CI

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