Fix malformed code blocks and formatting in Sign SDK overview documen…

[jadonamite]

Fixed critical formatting issues in the Sign SDK overview documentation (overview.mdx) that made installation instructions difficult to read and copy:

Main Issues Fixed:

1. Malformed CodeGroup blocks: Restructured collapsed package manager installation commands in the Web tab that were improperly formatted on single lines, making them unreadable and unusable
2. Node.js installation section: Fixed the same formatting issue in the lokijs installation CodeGroup
3. Improved code formatting: Cleaned up indentation and spacing throughout all platform-specific installation sections for better readability

Impact:

• Users can now properly copy and paste installation commands for npm, yarn, bun, and pnpm
• Installation instructions are now clear and accessible across all supported platforms
• Improved overall documentation quality and user experience

Tests

• - Ran the changes locally with Mintlify and confirmed that the changes appear as expected.
• - Ran a grammar check on the updated/created content using ChatGPT.
• - Verified all code blocks render correctly with proper syntax highlighting
• - Confirmed installation commands are properly separated and copyable

Direct link to the deployed preview files

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