docs: improve clarity and readability of upgrade documentation

[d-bytebase]

Summary

• Reworded upgrade process steps for better clarity and active voice
• Updated backup/restore procedures with more descriptive language
• Clarified that restoration requires using the previous Bytebase version when rolling back
• Simplified backup procedures by consolidating into a single recommended approach
• Improved consistency in heading styles and terminology throughout the document

Changes

• Rewrote introduction to be more welcoming ("This guide walks through...")
• Used action-oriented language in step descriptions
• Made section headers more descriptive ("Creating a Backup" vs just "Backup")
• Added helpful context to technical steps
• Removed redundant Docker command examples per user request

🤖 Generated with Claude Code

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Name	Status	Preview	Comments	Updated (UTC)
bytebase-com	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Aug 11, 2025 10:30am

[github-actions]

📝 Broken Links Check Report

Note: Entries under /api-reference/ are likely false positives and can be ignored.

The following is the output from the broken links check:

found 16 broken links in 9 files

integrations/api/audit-log.mdx
 ⎿  /api-reference/auditlogservice/post-v1auditlogs:search

integrations/api/authentication.mdx
 ⎿  /api-reference/authservice/post-v1authlogin

integrations/api/data-classification.mdx
 ⎿  /api-reference/settingservice/patch-v1settings
 ⎿  /api-reference/databaseservice/patch-v1instances-databases

integrations/api/issue.mdx
 ⎿  /api-reference/issueservice/post-v1projects-issues

integrations/api/permission.mdx
 ⎿  /api-reference/workspaceservice/get-v1workspaces-:getIamPolicy
 ⎿  /api-reference/projectservice/get-v1projects-:getIamPolicy
 ⎿  /api-reference/roleservice/get-v1roles
 ⎿  /api-reference/userservice/get-v1users
 ⎿  /api-reference/groupservice/get-v1groups

integrations/api/plan.mdx
 ⎿  /api-reference/planservice/post-v1projects-plans
 ⎿  /api-reference/sheetservice/post-v1projects-sheets

integrations/api/release.mdx
 ⎿  /api-reference/releaseservice/post-v1projects-releases

integrations/api/rollout.mdx
 ⎿  /api-reference/rolloutservice/post-v1projects-rollouts

integrations/api/sql-review.mdx
 ⎿  /api-reference/releaseservice/post-v1projects-releases:check
 ⎿  /api-reference/sqlservice/post-v1sqlcheck

[Copilot]

Pull Request Overview

This PR improves the clarity and readability of Bytebase's self-hosted upgrade documentation by rewriting content with more descriptive language and better structure. The changes focus on making the upgrade process more approachable and easier to follow for users.

• Rewrote upgrade process steps with action-oriented language and clearer sequencing
• Consolidated backup/restore procedures into streamlined approaches with better organization
• Enhanced section headers and terminology for improved navigation and understanding