Check for broken links (#1422)

Co-authored-by: Joris LIMONIER <joris.limonier@gmail.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

.github/workflows/cla.yml

@@ -1,6 +1,6 @@
 # Ultralytics YOLO 🚀, GPL-3.0 license
 
-name: "CLA Assistant"
+name: CLA Assistant
 on:
   issue_comment:
     types:
@@ -16,7 +16,7 @@ jobs:
     if: github.repository == 'ultralytics/ultralytics'
     runs-on: ubuntu-latest
     steps:
-      - name: "CLA Assistant"
+      - name: CLA Assistant
         if: (github.event.comment.body == 'recheck' || github.event.comment.body == 'I have read the CLA Document and I sign the CLA') || github.event_name == 'pull_request_target'
         uses: contributor-assistant/github-action@v2.3.0
         env:

.github/workflows/greetings.yml

@@ -25,7 +25,7 @@ jobs:
             See our [Contributing Guide](https://github.com/ultralytics/ultralytics/blob/main/CONTRIBUTING.md) for details and let us know if you have any questions!
 
           issue-message: |
-            👋 Hello @${{ github.actor }}, thank you for your interest in YOLOv8 🚀! We recommend a visit to the [YOLOv8 Docs](https://docs.ultralytics.com) for new users where you can find many [Python](https://docs.ultralytics.com/python/) and [CLI](https://docs.ultralytics.com/cli/) usage examples and where many of the most common questions may already be answered.
+            👋 Hello @${{ github.actor }}, thank you for your interest in YOLOv8 🚀! We recommend a visit to the [YOLOv8 Docs](https://docs.ultralytics.com) for new users where you can find many [Python](https://docs.ultralytics.com/usage/python/) and [CLI](https://docs.ultralytics.com/usage/cli/) usage examples and where many of the most common questions may already be answered.
 
             If this is a 🐛 Bug Report, please provide a [minimum reproducible example](https://stackoverflow.com/help/minimal-reproducible-example) to help us debug it.
 

.github/workflows/links.yml

@@ -0,0 +1,38 @@
+# Ultralytics YOLO 🚀, GPL-3.0 license
+# YOLO Continuous Integration (CI) GitHub Actions tests
+
+name: Check Broken links
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  workflow_dispatch:
+  schedule:
+    - cron: '0 0 * * *'  # runs at 00:00 UTC every day
+
+jobs:
+  Links:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Test Markdown and HTML links
+        uses: lycheeverse/lychee-action@v1.6.1
+        with:
+          fail: true
+          # accept 429(Instagram, 'too many requests'), 999(LinkedIn, 'unknown status code'), Timeout(Twitter)
+          args: --accept 429,999 --exclude twitter.com --verbose --no-progress './**/*.md' './**/*.html'
+        env:
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
+
+      - name: Test Markdown, HTML, YAML, Python and Notebook links
+        if: github.event_name == 'workflow_dispatch'
+        uses: lycheeverse/lychee-action@v1.6.1
+        with:
+          fail: true
+          # accept 429(Instagram, 'too many requests'), 999(LinkedIn, 'unknown status code'), Timeout(Twitter)
+          args: --accept 429,999 --exclude twitter.com,url.com --verbose --no-progress './**/*.md' './**/*.html' './**/*.yml' './**/*.yaml' './**/*.py' './**/*.ipynb'
+        env:
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}