Fix url space error (#41)

Fixes #40
![image](https://github.com/halo-sigs/plugin-s3/assets/28662535/03bc4ed8-c539-451f-8a88-99084240038a)

```release-note
None
```

src/main/java/run/halo/s3os/S3OsAttachmentHandler.java

@@ -171,8 +171,8 @@ Attachment buildAttachment(S3OsProperties properties, ObjectDetail objectDetail)
  var metadata = new Metadata();
  metadata.setName(UUID.randomUUID().toString());
  metadata.setAnnotations(new HashMap<>(
- Map.of(OBJECT_KEY, objectDetail.uploadState.objectKey, Constant.EXTERNAL_LINK_ANNO_KEY,
- UriUtils.encodePath(externalLink, StandardCharsets.UTF_8))));
+ Map.of(OBJECT_KEY, objectDetail.uploadState.objectKey,
+ Constant.EXTERNAL_LINK_ANNO_KEY, externalLink)));
 
  var objectMetadata = objectDetail.objectMetadata();
  var spec = new AttachmentSpec();
@@ -189,17 +189,19 @@ Attachment buildAttachment(S3OsProperties properties, ObjectDetail objectDetail)
  }
 
  private String getObjectURL(S3OsProperties properties, String objectKey) {
+ String objectURL;
  if (StringUtils.isBlank(properties.getDomain())) {
  String host;
  if (properties.getEnablePathStyleAccess()) {
  host = properties.getEndpoint() + "/" + properties.getBucket();
  } else {
  host = properties.getBucket() + "." + properties.getEndpoint();
  }
- return properties.getProtocol() + "://" + host + "/" + objectKey;
+ objectURL = properties.getProtocol() + "://" + host + "/" + objectKey;
  } else {
- return properties.getProtocol() + "://" + properties.getDomain() + "/" + objectKey;
+ objectURL = properties.getProtocol() + "://" + properties.getDomain() + "/" + objectKey;
  }
+ return UriUtils.encodePath(objectURL, StandardCharsets.UTF_8);
  }
 
  S3Client buildS3Client(S3OsProperties properties) {