diff --git a/docs/sponsors.md b/docs/sponsors.md
index bd022d3a..de7881f8 100644
--- a/docs/sponsors.md
+++ b/docs/sponsors.md
@@ -4,7 +4,7 @@
 
 ## 金牌赞助商（Gold Sponsor）
 
-[<img src="assets/hogwarts.jpeg" alt="霍格沃兹测试学院" width="500">](https://ceshiren.com/)
+[<img src="https://raw.githubusercontent.com/httprunner/httprunner/master/docs/assets/hogwarts.jpeg" alt="霍格沃兹测试学院" width="500">](https://ceshiren.com/)
 
 > [霍格沃兹测试开发学社](http://qrcode.testing-studio.com/f?from=httprunner&url=https://ceshiren.com)是业界领先的测试开发技术高端教育品牌，隶属于[测吧（北京）科技有限公司](http://qrcode.testing-studio.com/f?from=httprunner&url=https://www.testing-studio.com) 。学院课程由一线大厂测试经理与资深测试开发专家参与研发，实战驱动。课程涵盖 web/app 自动化测试、接口测试、性能测试、安全测试、持续集成/持续交付/DevOps，测试左移&右移、精准测试、测试平台开发、测试管理等内容，帮助测试工程师实现测试开发技术转型。通过优秀的学社制度（奖学金、内推返学费、行业竞赛等多种方式）来实现学员、学社及用人企业的三方共赢。
 
diff --git a/mkdocs.yml b/mkdocs.yml
index dbab26df..c1c53eaa 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -2,6 +2,10 @@
 # $ pip install mkdocs            # 1.1.2
 # $ pip install mkdocs-material   # 5.2.2
 
+# usage
+# $ mkdocs serve        # build docs and preview
+# $ mkdocs gh-deploy    # Deploy your documentation to GitHub Pages
+
 # Project information
 site_name: HttpRunner V3.x Docs
 site_description: HttpRunner V3.x User Documentation
@@ -13,7 +17,7 @@ repo_url: https://github.com/httprunner/httprunner
 edit_uri: ""
 
 # Copyright
-copyright: 'Copyright &copy; 2017 - 2020 debugtalk'
+copyright: 'Copyright &copy; 2017 - 2021 debugtalk'
 
 # Configuration
 theme: