docs: update scripts/linting/README.md to document OutputPath parameter for Invoke-LinkLanguageCheck.ps1

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Component: Documentation

Bug Description

scripts/linting/README.md documents Invoke-LinkLanguageCheck.ps1 (lines 184–211) but does not include a Parameters section. PR #1229 added a new -OutputPath parameter to the script, and neither OutputPath nor the pre-existing -ExcludePaths parameter are documented in the README.

What the documentation currently says:

The section for Invoke-LinkLanguageCheck.ps1 contains only a Features list and two usage examples (-Verbose, -Debug). No parameters are listed.

What changed in code (PR #1229 / commit 2aad98e):

• Added -OutputPath parameter (default: "logs/link-lang-check-results.json") to Invoke-LinkLanguageCheck.ps1
• The output path is now configurable; the script creates the output directory if it does not exist
• Updated the inner Invoke-LinkLanguageCheckCore function to accept and forward OutputPath

Expected Behavior

scripts/linting/README.md should include a Parameters section under Invoke-LinkLanguageCheck.ps1 that documents:

• -ExcludePaths (string array, optional) — paths to exclude from the check
• -OutputPath (string, optional, default "logs/link-lang-check-results.json") — path where the JSON result file is written; parent directory is created automatically if it does not exist

The Usage section should also include an example showing a custom output path, e.g.:

# Write results to a custom location
./scripts/linting/Invoke-LinkLanguageCheck.ps1 -OutputPath "custom/results.json"

Steps to Reproduce

1. Open scripts/linting/README.md
2. Navigate to the Invoke-LinkLanguageCheck.ps1 section (around line 184)
3. Observe that no Parameters section exists and -OutputPath is not mentioned

Additional Context

• Code file changed: scripts/linting/Invoke-LinkLanguageCheck.ps1
• Documentation file requiring update: scripts/linting/README.md (lines 184–211)
• Introduced by: PR feat(1004): add OutputPath parameter to Invoke-LinkLanguageCheck.ps1 #1229, commit 2aad98e

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