Fix: wrong link picture_as_pdf change to img-to-pdf #2867 (#2869)

# Description of Changes

Please provide a summary of the changes, including:

- What was changed
- Why the change was made
- Any challenges encountered

Closes #2867

---

## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md)
(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](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] 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)

### 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](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md#6-testing)
for more details.

src/main/resources/templates/home-legacy.html

@@ -148,7 +148,7 @@
             </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')}">