pipeline bug, doc bugs, auto split new URL and doc

[Frooodle]

Description of Changes

Please provide a summary of the changes, including:

• What was changed
  Pipeline bug where files would be processed even when incorrect format
  some API docs had spaces causing format issues
  Auto split doc now links to stirlingpdf.com not github + updated old logo
  removed old docs not used

• Why the change was made

• Any challenges encountered

Closes #(issue_number)

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Checklist

General

• I have read the Contribution Guidelines
• I have read the Stirling-PDF Developer Guide (if applicable)
• I have read the How to add new languages to Stirling-PDF (if applicable)
• I have performed a self-review of my own code
• My changes generate no new warnings

Documentation

• I have updated relevant docs on Stirling-PDF's doc repo (if functionality has heavily changed)
• I have read the section Add New Translation Tags (for new translation tags only)

UI Changes (if applicable)

• Screenshots or videos demonstrating the UI changes are attached (e.g., as comments or direct attachments in the PR)

Testing (if applicable)

• I have tested my changes locally. Refer to the Testing Guide for more details.

[github-actions]

🚀 Translation Verification Summary

🔄 Reference Branch: pr-branch-messages_en_GB.properties

📃 File Check: messages_en_GB.properties

1. Test Status: ✅ Passed
2. Test Status: ✅ Passed
3. Test Status: ✅ Passed

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✅ Overall Check Status: Success

Thanks @Frooodle for your help in keeping the translations up to date.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[DarioGii]

👍🏾