RFR: 7420: Update Japanese translation for rules

[mohno007]

On Tue, 21 Sep 2021 22:59:14 GMT, Marcus Hirt <hirt at openjdk.org> wrote:

> Let me know if you need any help with verifying the OCA status! 

I run into a problem with OCA.
I submitted the OCA application once but I wanted to change my email address, so I withdrew it and changed my email address.
Then I tried to submit the OCA application again, but I got an error which says the GitHub username is already in use.

I have already contacted Oracle Support by email and currently waiting for a response.

>  I've asked a friend in Japan to verify the texts.

Thank you.
I write Java code but I'm not very familiar with Java internals and its translation, so it would be very helpful if someone could check this translation.

> core/org.openjdk.jmc.flightrecorder.rules.jdk/src/main/resources/org/openjdk/jmc/flightrecorder/rules/jdk/messages/internal/messages_ja.properties line 2:
> 
>> 1: #
>> 2: #  Copyright (c) 2018, 2019, 2020, 2021 Oracle and/or its affiliates. All rights reserved.
> 
> Only the first and the last year in the range should be in the copyright header. In this case the text should be:
> Copyright (c) 2018, 2021, Oracle and/or its affiliates. All rights reserved.
> 
> Note the comma after the end year as well.

I fixed it in 48d36d496f8085da84b434a6842da6009b72bfe1

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PR: https://git.openjdk.java.net/jmc/pull/308