Merge pull request #479 from github/markdownlint

lint markdown files

Author: BlakeWilliams

.github/lint/markdown.json

@@ -0,0 +1,7 @@
+{
+  "default": true,
+  "line_length": false,
+  "ol-prefix": false,
+  "no-trailing-punctuation": false,
+  "no-inline-html": false
+}

.github/workflows/ci.yml

@@ -3,6 +3,14 @@ name: CI
 on: [push, pull_request]
 
 jobs:
+  markdown:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@master
+    - uses: avto-dev/markdown-lint@v1
+      with:
+        config: '.github/lint/markdown.json'
+        args: '**/*.md'
   lint:
     runs-on: ubuntu-latest
     steps: