Swagger fixes (#5071)

# Description of Changes

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Please provide a summary of the changes, including:

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

Closes #(issue_number)
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## 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/devGuide/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/devGuide/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/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### Translations (if applicable)

- [ ] I ran
[`scripts/counter_translation.py`](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/docs/counter_translation.md)

### 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/devGuide/DeveloperGuide.md#6-testing)
for more details.

Co-authored-by: Reece Browne <[email protected]>

app/proprietary/src/main/java/stirling/software/proprietary/controller/api/form/FormFillController.java

@@ -34,7 +34,19 @@ import stirling.software.proprietary.util.FormUtils;
 
 @RestController
 @RequestMapping("/api/v1/form")
-@Tag(name = "Forms", description = "PDF form APIs")
+@Tag(
+        name = "Forms",
+        description =
+                """
+                Work with PDF form fields: read them, fill them, edit them, or remove them.
+                Treats a PDF as a structured form instead of just flat pages.
+
+                Typical uses:
+                • Inspect which form fields exist in a PDF
+                • Autofill forms from your own systems (e.g. CRM, ERP)
+                • Change or delete form fields before sending out a final, non-editable copy
+                • Unlock read-only form fields when you need to update them
+                """)
 @RequiredArgsConstructor
 public class FormFillController {