Compression fixes (#3081)

# Description of Changes

Please provide a summary of the changes, including:

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

Closes #(issue_number)

---

## 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/messages_ko_KR.properties

@@ -931,10 +931,9 @@ compress.title=압축
 compress.header=PDF 압축
 compress.credit=이 서비스는 PDF 압축/최적화를 위해 qpdf를 사용합니다.
 compress.grayscale.label=압축을 위해 그레이스케일 적용
-compress.selectText.1=수동 모드 - 1에서 5
-compress.selectText.1.1=최적화 레벨 6에서 9에서는 일반적인 PDF 압축 외에도 이미지 해상도가 낮아져 파일 크기가 더욱 감소합니다. 높은 레벨은 더 강력한 이미지 압축(원본 크기의 최대 50%)을 초래하여 더 큰 크기 감소를 달성하지만 이미지 품질이 저하될 수 있습니다.
+compress.selectText.1=Compression Settings
+compress.selectText.1.1=1-3 PDF compression,</br> 4-6 lite image compression,</br> 7-9 intense image compression Will dramatically reduce image quality
 compress.selectText.2=최적화 레벨:
-compress.selectText.3=4 (텍스트 이미지에는 좋지 않음)
 compress.selectText.4=자동 모드 - PDF를 정확한 크기로 만들기 위해 품질 자동 조정
 compress.selectText.5=예상 PDF 크기 (예: 25MB, 10.8MB, 25KB)
 compress.submit=압축