Fix img to pdf url (#2719)

# 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/home.html

@@ -140,7 +140,7 @@
             </div>
             <div class="feature-group-container">
               <div
-                th:replace="~{fragments/card :: card(id='img-to-pdf', cardTitle=#{home.imageToPdf.title}, cardText=#{home.imageToPdf.desc}, cardLink='picture_as_pdf', toolIcon='picture_as_pdf', tags=#{imageToPdf.tags}, toolGroup='image')}">
+                th:replace="~{fragments/card :: card(id='img-to-pdf', cardTitle=#{home.imageToPdf.title}, cardText=#{home.imageToPdf.desc}, cardLink='img-to-pdf', toolIcon='picture_as_pdf', tags=#{imageToPdf.tags}, toolGroup='image')}">
               </div>
               <div
                 th:replace="~{fragments/card :: card(id='file-to-pdf', cardTitle=#{home.fileToPDF.title}, cardText=#{home.fileToPDF.desc}, cardLink='file-to-pdf', toolIcon='draft', tags=#{fileToPDF.tags}, toolGroup='convert')}">