[ja]Addressed the translation omissions

[shukawam]

#5982

I have addressed the translation omissions in the exporter section.
There are still some English parts within the shortcode, but I plan to handle those during the translation of other sections that use the shortcode.

Executed npm run fix:all in my local env and confirmed that there are no issues.

[ymotongpoo]

Thank you for your contribution, @shukawam! I added minor requests but other than those, LGTM.

[ymotongpoo]

LGTM

[chalin]

LGTM

Hi @ymotongpoo - as mentioned in https://cloud-native.slack.com/archives/C076RUAGP37/p1738265105433829

All: a quick reminder to tag your PRs with the label docs-approval-missing when you have completed your locale-specific review and are awaiting final docs-maintainers approval.

When ja PRs are ready for a final review from @open-telemetry/docs-approvers, add the docs-approval-missing tag tot he PR. Thanks.

[opentelemetrybot]

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[ymotongpoo]

@chalin thank you for sharing the process. I could not catch up with the message that mentions the docs-approval-missing tag. I'll make sure to put it for future PRs.