RFR: 8327361: Update some comments after JDK-8139457

[Galder Zamarreño]

On Tue, 5 Mar 2024 11:06:48 GMT, Roman Kennke <rkennke at openjdk.org> wrote:

> A follow-up to [8139457: Relax alignment of array elements](https://bugs.openjdk.org/browse/JDK-8139457) ([PR](https://git.openjdk.org/jdk/pull/11044)), some comments need an update.

I think the changes look fine, but looking closer to the original PR, src/hotspot/cpu/riscv/c1_MacroAssembler_riscv.hpp might also need adjusting. s390 and ppc are probably just fine.

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Changes requested by galder (Author).

PR Review: https://git.openjdk.org/jdk/pull/18120#pullrequestreview-1916637704