DatabaseImagePersistenceStrategy.save(): improve logging message.

No functional changes.

[ci skip]

Author: php-coder

src/main/java/ru/mystamps/web/service/DatabaseImagePersistenceStrategy.java

@@ -55,7 +55,7 @@ public void save(MultipartFile file, ImageInfoDto image) {
 			imageData.setContent(file.getBytes());
 
 			Integer id = imageDataDao.add(imageData);
-			LOG.info("Image's data #{} for image #{} have been saved", id, image.getId());
+			LOG.info("Image data #{} for image #{} has been saved", id, image.getId());
 
 		} catch (IOException e) {
 			// throw RuntimeException for rolling back transaction