M3DUtil/MActorAnm: wrap the MtxCalcTypeName comment to 80 columns

[KakarottoCake]

One comment block, rewrapped. No code, no wording changes.

The three lines above enum MActorMtxCalcType landed in c19ae4d at 82 and 81 columns
against the repo's ColumnLimit: 80, so check-format-and-tidy fails on the file.

This is currently failing every open pull request. The clang-format action walks the
whole tree rather than the diff, so any PR goes red as soon as it merges main -- for a
violation none of them introduced. I ran into it on #154 and confirmed it is not specific
to that branch, which is why this is split out here rather than left riding on it: the
other open PRs should not have to wait on mine to go green.

It is also the only one. After this reflow, clang-format --dry-run -Werror across all of
src/ and include/ reports zero failing files.

-// The names come from the MtxCalcTypeName table in M3DUtil/InfectiousStrings.hpp,
-// which survives in the ROM (read it in MarioDraw.cpp's .data): its four entries
-// are "MActorMtxCalcType_Basic", "_Softimage", "_MotionBlend" and "_User".
+// The names come from the MtxCalcTypeName table in
+// M3DUtil/InfectiousStrings.hpp, which survives in the ROM (read it in
+// MarioDraw.cpp's .data): its four entries are "MActorMtxCalcType_Basic",
+// "_Softimage", "_MotionBlend" and "_User".

The same commit is also on #154 so that branch could go green on its own. Once this
merges, the two are identical content and #154 will fast-forward past it cleanly -- but if
you would rather it exist in only one place, say so and I will drop it from #154.

[decomp-dev]

Report for GMSJ01 (3f6c413 - 71a41d2)

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