@PutMapping("/id/{id}")
    public ShenyuAdminResult updateTag(@PathVariable("id") @Valid final String id,
                                        @Valid @RequestBody final TagDTO tagDTO) {
        tagDTO.setId(id);
        Integer updateCount = tagService.update(tagDTO);
        return ShenyuAdminResult.success(ShenyuResultMessage.UPDATE_SUCCESS, updateCount);
    }
update tag.

@param id    primary key.
@param tagDTO rule.
@return {@linkplain ShenyuAdminResult}
shenyu-admin/src/main/java/org/apache/shenyu/admin/controller/TagController.java