Move docs to website (#2571)

# 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)

src/main/resources/templates/misc/ocr-pdf.html

@@ -220,7 +220,7 @@
                 });
               </script>
               <p th:text="#{ocr.help}"></p>
-              <a href="https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToUseOCR.md">https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToUseOCR.md</a>
+              <a href="https://docs.stirlingpdf.com/Advanced%20Configuration/OCR">https://docs.stirlingpdf.com/Advanced%20Configuration/OCR</a>
             </div>
           </div>
         </div>

src/main/resources/templates/pipeline.html

@@ -76,14 +76,14 @@
                   </div>
                   <br/>
                   <a
-                    href="https://github.com/Stirling-Tools/Stirling-PDF/blob/main/PipelineFeature.md"
+                    href="https://docs.stirlingpdf.com/Advanced%20Configuration/Pipeline"
                     target="_blank"
                     th:text="#{pipeline.help}"
                     >Pipeline Help</a
                   >
                   <br/>
                   <a
-                    href="https://github.com/Stirling-Tools/Stirling-PDF/blob/main/FolderScanning.md"
+                    href="https://docs.stirlingpdf.com/Advanced%20Configuration/Folder%20Scanning"
                     target="_blank"
                     th:text="#{pipeline.scanHelp}"
                     >Folder Scanning Help</a