fix: correct indentation in langsmith/cli.mdx

[happyphper]

Overview

This PR fixes formatting inconsistencies in one LangSmith documentation files:
Corrects tab-based indentation in markdown tables within src/langsmith/cli.mdx, replacing tabs with spaces for consistent rendering across different markdown parsers.

Type of change

Type: Fix typo/bug/link/formatting

Related issues/PRs

• GitHub issue: None
• Feature PR: None

• Linear issue: N/A
• Slack thread: N/A

Checklist

• I have read the contributing guidelines
• I have tested my changes locally using docs dev
• All code examples have been tested and work correctly (N/A - formatting changes only)
• I have used root relative paths for internal links (N/A - no link changes)
• I have updated navigation in src/docs.json if needed (N/A - no navigation structure changes)

(Internal team members only / optional): Create a preview deployment as necessary using the Create Preview Branch workflow

Additional notes

• Used targeted sed replacements instead of automated formatters to avoid unintended changes
• Tab characters were replaced with 4 spaces to match project's indentation style
• Verified changes by:
  1. Running cat -A to visualize non-printable characters
  2. Previewing in local development server
  3. Checking markdown rendering in VS Code preview
• These fixes ensure consistent display across different markdown parsers and editors