Editorial improvements for #690

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Editorial Review

This PR contains structural improvements to documentation changed in #690.

Changes

• app/en/get-started/mcp-clients/claude-desktop/page.mdx: Headings section - Changed from "Use Arcade in Claude Desktop" to sentence case
• app/en/get-started/mcp-clients/copilot-studio/page.mdx: Structure section - Changed passive voice "Connect Microsoft Copilot Studio to an Arcade MCP Gateway" to active voice following direct/confident voice guidelines
• app/en/get-started/mcp-clients/cursor/page.mdx: Voice and Tone (Use "you" for the reader) - Changed "Connect Cursor" to "You can connect Cursor"
• app/en/get-started/mcp-clients/visual-studio-code/page.mdx: Structure - Added intro line explaining what reader will learn; Arcade Terminology - Corrected "MCP Server" to "MCP server" in body text
• app/en/get-started/quickstarts/call-tool-client/page.mdx: Voice and Tone - Changed "Learn how to call" to direct statement; Structure - Added intro line; What to avoid - Removed "simple" language

Context

These suggestions are based on our style guide and focus on document structure, not word-level fixes (which are handled by Vale).

Review each change carefully - accept what improves the docs, modify what needs adjustment, or close this PR if the changes aren't helpful.

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Project	Deployment	Review	Updated (UTC)
docs	Error		Jan 22, 2026 9:08pm