repo field is bytes type

[jason3130]

repo field is bytes type so cast to str
update before：

      <tr>
                    <td><a href="{{repo}}" target='_blank'>{{repo}}</a></td>

                    <td>{{desc.repo_desc}}</td>
                    <td>{{desc.star}}</td>
                    <td><input type="checkbox" class="del-repo" data={{repo}}></td>
                </tr>

update after:
![QQ截图20210119115707](https://user-images.githubusercontent.com/3123867/104986210-88db7f00-5a4d-11eb-91d1-f9a649ccaa9d.png

)

  <tr>
                    <td><a href="{{repo.decode('utf-8')}}" target='_blank'>{{ repo.decode('utf-8')}}</a></td>

                    <td>{{desc.repo_desc}}</td>
                    <td>{{desc.star}}</td>
                    <td><input type="checkbox" class="del-repo" data={{repo.decode('utf-8')}}></td>
                </tr>