tests: add markdown link checker

.github/workflows/check-md-links.yml

@@ -0,0 +1,26 @@
+name: Markdown Links Check
+# runs every monday at 9 am
+on:
+  schedule:
+    - cron: "0 9 * * 1"
+
+jobs:
+  check-links:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+      - uses: gaurav-nelson/github-action-markdown-link-check@v1
+        # checks all markdown files from /docs including all subfolders
+        with:
+          use-quiet-mode: 'yes'
+          use-verbose-mode: 'yes'
+          config-file: 'markdown.links.config.json'
+          folder-path: 'docs/'
+      - uses: actions/checkout@master
+      - uses: gaurav-nelson/github-action-markdown-link-check@v1
+        # checks all markdown files from root but ignores subfolders
+        with:
+          use-quiet-mode: 'yes'
+          use-verbose-mode: 'yes'
+          config-file: 'markdown.links.config.json'
+          max-depth: 0

.github/workflows/ci.yml

@@ -153,7 +153,7 @@ jobs:
     - run: sudo apt-get install xvfb
     - name: Run smoke tests
       run: xvfb-run --auto-servernum yarn smoke --debug -j=1 --retries=2 --invert-match ${{ matrix.smoke-test-invert }} $SMOKE_GROUP_1
-  
+
   # Only run smoke tests for windows against stable chrome.
   smoke-windows:
     runs-on: windows-latest

docs/readme.md

@@ -133,7 +133,7 @@ $ lighthouse --port=9222 --emulated-form-factor=none --throttling.cpuSlowdownMul
 
 ## Lighthouse as trace processor
 
-Lighthouse can be used to analyze trace and performance data collected from other tools (like WebPageTest and ChromeDriver). The `traces` and `devtoolsLogs` artifact items can be provided using a string for the absolute path on disk if they're saved with `.trace.json` and `.devtoolslog.json` file extensions, respectively. The `devtoolsLogs` array is captured from the `Network` and `Page` domains (a la ChromeDriver's [enableNetwork and enablePage options]((https://sites.google.com/a/chromium.org/chromedriver/capabilities#TOC-perfLoggingPrefs-object)).
+Lighthouse can be used to analyze trace and performance data collected from other tools (like WebPageTest and ChromeDriver). The `traces` and `devtoolsLogs` artifact items can be provided using a string for the absolute path on disk if they're saved with `.trace.json` and `.devtoolslog.json` file extensions, respectively. The `devtoolsLogs` array is captured from the `Network` and `Page` domains (a la ChromeDriver's [enableNetwork and enablePage options](https://sites.google.com/a/chromium.org/chromedriver/capabilities#TOC-perfLoggingPrefs-object)).
 
 As an example, here's a trace-only run that reports on user timings and critical request chains:
 

markdown.links.config.json

@@ -0,0 +1,10 @@
+{
+  "ignorePatterns": [
+    {
+      "pattern": "^http://www.tmeter.ru"
+    },
+    {
+      "pattern": "https://github.com/GoogleChrome/lighthouse/workflows/\uD83D\uDCA1\uD83C\uDFE0/badge.svg"
+    }
+  ]
+}