Add Desktop Windows .nsis instructions

[neuronull]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-27193

📔 Objective

Add documentation for the requirement to have .nsis file adjacent to the installer for Windows builds.

⏰ Reminders before review

• Contributor guidelines followed
• All formatters and local linters executed and passed
• Written new unit and / or integration tests where applicable
• Protected functional changes with optionality (feature flags)
• Used internationalization (i18n) for all UI strings
• CI builds passed
• Communicated to DevOps any deployment requirements
• Updated any necessary documentation (Confluence, contributing docs) or informed the documentation
  team

🦮 Reviewer guidelines

• 👍 (:+1:) or similar for great changes
• 📝 (:memo:) or ℹ️ (:information_source:) for notes or general info
• ❓ (:question:) for questions
• 🤔 (:thinking:) or 💭 (:thought_balloon:) for more open inquiry that's not quite a confirmed
  issue and could potentially benefit from discussion
• 🎨 (:art:) for suggestions / improvements
• ❌ (:x:) or ⚠️ (:warning:) for more significant problems or concerns needing attention
• 🌱 (:seedling:) or ♻️ (:recycle:) for future improvements or indications of technical debt
• ⛏ (:pick:) for minor or nitpick changes

[claude]

Claude finished @neuronull's task in 1m 58s —— View job

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Code Review Complete

The documentation changes have been reviewed. The agent has analyzed the new Windows NSIS troubleshooting instructions and identified several areas for improvement regarding clarity and completeness of the instructions.

[github-actions]

Checkmarx One – Scan Summary & Details – 68117648-90dd-4e88-9a8b-dadbfeb19226

Great job! No new security vulnerabilities introduced in this pull request

[coltonhurst]

Looks pretty good, thanks for adding this @neuronull!

One general question I'm sure you thought about. Why have this on its own page, versus a small section added under the troubleshooting section? I'm not against it having its own page, but I'm wondering if some things could be made more concise to fit it there?

Another option is keeping the new page and adding the problem to the troubleshooting section with a link to the new page as the solution.

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