Remove pdfEndpoint.com (domain is dead)

pdfendpoint.com no longer resolves — the domain returns no response
(connection timeout on both HTTP and HTTPS). The service appears to
be permanently shut down.

README.md

@@ -315,7 +315,6 @@ This list results from Pull Requests, reviews, ideas, and work done by 1600+ peo
   * [Parseur](https://parseur.com) - 20 free pages/month: Extract data from PDFs, emails. AI powered. Full API access.
   * [PDF-API.io](https://pdf-api.io) - PDF Automation API, visual template editor or HTML to PDF, dynamic data integration, and PDF rendering with an API. The free plan comes with one template, 100 PDFs/month.
   * [PDFBolt](https://pdfbolt.com) - Developer-focused PDF generation API designed with privacy in mind. It offers Stripe-inspired documentation and includes 500 free PDF conversions per month.
-  * [pdfEndpoint.com](https://pdfendpoint.com) - Effortlessly convert HTML or URLs to PDF with a simple API. One hundred conversions per month for free.
   * [Pixela](https://pixe.la/) - Free daystream database service. All operations are performed by API. Visualization with heat maps and line graphs is also possible.
   * [Posthook](https://posthook.io) - Schedule webhooks to fire at a future time with automatic retries, delivery tracking, and failure alerting. Free plan includes 1,000 webhooks per month.
   * [Postman](https://postman.com) - Simplify workflows and create better APIs - faster - with Postman, a collaboration platform for API development. Use the Postman App for free forever. Postman cloud features are also free forever with certain limits.