Merge branch 'master' into 'master'

添加OpenCV技术文章

See merge request codechina/operation-work!30

explore/index.yml

@@ -15,7 +15,7 @@ trending_words:
 #    link: 'https://codechina.csdn.net/codechina/help-docs/-/wikis/docs/user/org/star-community-join-plan'
 projects: 
   - 'csdn_codechina/enterprise_technology'
-  - 'codechina/programmer/mdbook'
+  - 'csdn_codechina/opencv_technology'
   - 'weixin_44343074/netease-cloud'
   - 'megvii/megengine'
   - 'apachecn/pytorch-doc-zh'