<i18n dev> RFR: 8285370: Fix typo in jdk.charsets

[Naoto Sato]

On Thu, 21 Apr 2022 11:34:14 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

> `codespell` could just find a single typo in the files covered by the i18n alias. Just fixing the typo did not make the comment more readable, so I rewrote it slightly.

Marked as reviewed by naoto (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/8335