Merge branch 'master' into 'master'

添加mediawiki和mediawiki-docker的镜像仓库

See merge request codechina/mirrors-settings!593

projects/wikimedia/imports.yml

+---
+group:
+  name: 'wikimedia'
+  description: ''
+  projects:
+  - name: 'mediawiki'
+    description: ''
+    mirrorRelease: false
+    topic: ''
+  - name: 'mediawiki-docker'
+    description: ''
+    mirrorRelease: false
+    topic: ''