[FEATURE]: docs(ko): improve natural Korean phrasing in gitlab, ide, index, keybinds, and lsp docs

[Seungjun0906]

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

I want to improve wording quality in Korean docs so they read naturally for Korean developers while preserving technical meaning and existing structure.

Scope:

• packages/web/src/content/docs/ko/gitlab.mdx
• packages/web/src/content/docs/ko/ide.mdx
• packages/web/src/content/docs/ko/index.mdx
• packages/web/src/content/docs/ko/keybinds.mdx
• packages/web/src/content/docs/ko/lsp.mdx

Expected outcome:

• Preserve original technical meaning and Markdown structure
• Improve readability with natural Korean phrasing
• Keep glossary-aligned terminology and modal strength (must/should/may)
• Preserve code blocks, commands, and URLs exactly as-is

This is a docs-only improvement and does not change runtime behavior.

[github-actions]

This issue might be a duplicate of existing issues from the same series of Korean docs improvements. Please check:

• docs(ko): improve natural Korean phrasing in intro, cli, and commands docs #13092: docs(ko): improve natural Korean phrasing in intro, cli, and commands docs (includes index.mdx)
• docs(ko): improve natural Korean phrasing in acp, agents, config, and custom-tools docs #13440: docs(ko): improve natural Korean phrasing in acp, agents, config, and custom-tools docs
• [FEATURE]: docs(ko): improve natural Korean phrasing in ecosystem, enterprise, formatters, and github docs #14219: [FEATURE]: docs(ko): improve natural Korean phrasing in ecosystem, enterprise, formatters, and github docs

These are all closed issues from the same author following the same pattern. Please confirm this work hasn't already been covered or is being tracked elsewhere.

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Since this issue includes keybinds.mdx in scope, please also check our pinned keybinds documentation: #4997