Pdf to markdown (#2730)

# Description

Please provide a summary of the changes, including relevant motivation
and context.

Closes #(issue_number)

## Checklist

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have performed a self-review of my own code
- [ ] I have attached images of the change if it is UI based
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] If my code has heavily changed functionality I have updated
relevant docs on [Stirling-PDFs doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
- [ ] My changes generate no new warnings
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

---------

Co-authored-by: a <a>

src/main/java/stirling/software/SPDF/controller/web/ConverterWebController.java

@@ -44,6 +44,13 @@ public class ConverterWebController {
         return "convert/markdown-to-pdf";
     }
 
+    @GetMapping("/pdf-to-markdown")
+    @Hidden
+    public String convertPdfToMarkdownForm(Model model) {
+        model.addAttribute("currentPage", "pdf-to-markdown");
+        return "convert/pdf-to-markdown";
+    }
+
     @GetMapping("/url-to-pdf")
     @Hidden
     public String convertURLToPdfForm(Model model) {