i18n(ja): fix dropped particles and unclosed parenthesis found by CodeRabbit

[yahonda]

What is changed, added or deleted? (Required)

Fixes 3 defect classes found by CodeRabbit on PR #23778 (zero-width-space removal) that were unrelated to that PR's scope, split here to keep that diff focused:

1. Missing を particle before the .env/env.sh destination file name in the "copy and paste the corresponding connection string" step instruction, shared across 14 develop/dev-guide-sample-application-*.md pages + develop/dev-guide-wordpress.md (48 sites total -- CodeRabbit flagged only 1 site, a corpus grep for the identical shared template sentence found the same defect repeated across all sibling guide pages using this instruction).
2. tidb-cloud/tidbx-instance-move-faq.md: unclosed parenthesis around a support-contact mailto link.
3. tiproxy/tiproxy-configuration.md: missing と particle before 組み合わせて使用できます.

Which TiDB version(s) do your changes apply to? (Required)

• i18n-ja-release-8.5 (TiDB Japanese documentation for TiDB 8.5 versions)

What is the related PR or file link(s)?

• This PR is translated from:
• Other reference link(s): i18n(ja): remove stray zero-width-space MT artifacts #23778 (where these were found via CodeRabbit review)

AI agent involvement

• The changes in this PR were primarily made by an AI agent on behalf of the PR author.

Do your changes match any of the following descriptions?

• Delete files
• Change aliases
• Need modification after applied to another branch
• Might cause conflicts after applied to another branch

Summary by CodeRabbit

• Documentation
  • Corrected Japanese grammar and removed invisible-character typos in connection setup instructions across multiple language and framework guides.
  • Clarified directions for copying connection strings into .env and env.sh files.
  • Fixed Japanese wording in the WordPress and TiProxy configuration guides.
  • Corrected malformed Markdown syntax in the TiDBX instance move FAQ.

[ti-chi-bot]

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Advanced

Run ID: dd5a9ba5-8c27-4fd3-892f-a3d998898ac0

📥 Commits

Reviewing files that changed from the base of the PR and between a2da298 and 3cb307e.

📒 Files selected for processing (16)

• develop/dev-guide-sample-application-golang-gorm.md
• develop/dev-guide-sample-application-golang-sql-driver.md
• develop/dev-guide-sample-application-java-hibernate.md
• develop/dev-guide-sample-application-java-jdbc.md
• develop/dev-guide-sample-application-java-mybatis.md
• develop/dev-guide-sample-application-java-spring-boot.md
• develop/dev-guide-sample-application-nextjs.md
• develop/dev-guide-sample-application-python-django.md
• develop/dev-guide-sample-application-python-mysql-connector.md
• develop/dev-guide-sample-application-python-mysqlclient.md
• develop/dev-guide-sample-application-python-peewee.md
• develop/dev-guide-sample-application-python-pymysql.md
• develop/dev-guide-sample-application-python-sqlalchemy.md
• develop/dev-guide-wordpress.md
• tidb-cloud/tidbx-instance-move-faq.md
• tiproxy/tiproxy-configuration.md

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📝 Walkthrough

Walkthrough

The pull request corrects Japanese wording and invisible-character issues in connection instructions across sample application guides. It also fixes one malformed Markdown link and one TiProxy documentation phrase. No code or configuration changes are included.

Changes

Connection instruction corrections

Layer / File(s)	Summary
Sample application connection instructions develop/dev-guide-sample-application-*.md, develop/dev-guide-wordpress.md	Corrects Japanese connection-string instructions across Go, Java, Python, Next.js, and WordPress guides. The edits add missing particles and remove invisible characters.

FAQ link correction

Layer / File(s)	Summary
Support link markup tidb-cloud/tidbx-instance-move-faq.md	Closes the support mailto link with the missing Markdown bracket and parenthesis.

TiProxy wording correction

Layer / File(s)	Summary
Virtual-IP description tiproxy/tiproxy-configuration.md	Adds the missing Japanese conjunction in the virtual-ip description.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~5 minutes

Merge Risk: ⚪ Minimal · up to 3cb30

This change corrects Japanese connection instructions, a support mailto link, and TiProxy wording without altering product behavior or configuration. No current merge-readiness risk remains.

Suggested reviewers: qiancai

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description check	✅ Passed	The description explains all three defect classes, identifies the affected files and scope, specifies the target documentation version, references the related PR, and records AI involvement. The optio…
Title check	✅ Passed	The title clearly summarizes the Japanese localization fixes for dropped particles and an unclosed parenthesis. It is concise and related to the main changes.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests

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