Fix markdownlint errors introduced by merge of affaan-m:main

[Copilot]

The merge of affaan-m:main (affaan-m#54) introduced 20 markdownlint violations across 12 files, breaking npm run lint.

Fixes

• MD034 (bare URLs) — Wrapped raw URLs in <angle brackets> across 8 files (CODE_OF_CONDUCT.md, guides, videodb skills)
• MD056 (table column count) — Pipe characters inside table cells misinterpreted as column separators; fixed with | (inside code spans) or \| (outside):

  <!-- before -->
  | XSS | Use `|safe` filter |
  <!-- after -->
  | XSS | Use `&#124;safe` filter |

• MD053 (unused link reference) — docs/zh-CN/CODE_OF_CONDUCT.md had \[Contributor Covenant]\[homepage] with escaped brackets, making the [homepage] definition unreferenced; removed the escapes
• MD028 (blank line in blockquote) — skills/videodb/reference/api-reference.md had a bare blank line between two > blocks; replaced with >
• MD012 (multiple blank lines) — skills/videodb/SKILL.md had a double blank line; collapsed to single

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Pull request overview

Fixes 20 markdownlint violations across 12 files that were introduced by a prior merge, restoring npm run lint to a passing state.

Changes:

• Wrapped bare URLs in angle brackets to fix MD034 violations across multiple files
• Escaped pipe characters in markdown tables using | or \| to fix MD056 violations
• Fixed miscellaneous MD028 (blank line in blockquote), MD012 (multiple blank lines), and MD053 (unused link reference) violations

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
CODE_OF_CONDUCT.md	Wrapped bare URLs in angle brackets
the-shortform-guide.md	Wrapped bare URL in angle brackets
the-longform-guide.md	Wrapped bare URLs in angle brackets
docs/zh-CN/CODE_OF_CONDUCT.md	Removed escaped brackets, wrapped bare URLs
docs/zh-CN/the-shortform-guide.md	Wrapped bare URL in angle brackets
docs/zh-CN/the-longform-guide.md	Wrapped bare URLs in angle brackets
docs/zh-CN/commands/python-review.md	Escaped pipe in table cell
docs/zh-TW/agents/database-reviewer.md	Escaped pipe in table cell with |
docs/ja-JP/skills/django-security/SKILL.md	Escaped pipe in table cell with |
skills/videodb/SKILL.md	Wrapped bare URL, removed extra blank line
skills/videodb/reference/api-reference.md	Fixed blank line in blockquote continuation
skills/videodb/reference/capture-reference.md	Wrapped bare URL in angle brackets

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