Switch Link Checker to Lychee (#137)

* Switch Link Checker to Lychee

It’s fast and can handle more links

* Udemy reports 403

https://github.com/lycheeverse/lychee/issues/1157

* trigger

.github/workflows/links.yml

@@ -0,0 +1,15 @@
+name: Links
+
+on:
+  - pull_request
+
+jobs:
+  linkChecker:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Link Checker
+        uses: lycheeverse/lychee-action@v1
+        with:
+          fail: true
+          args: --accept 403 './**/*.md'

.github/workflows/main.yml

@@ -1,18 +0,0 @@
-name: AwesomeBot
-# Controls when the workflow will run
-on:
-  # Triggers the workflow on push or pull request events but only for the master branch
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
-jobs:
-  test:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - uses: ruby/setup-ruby@v1
-      with:
-        ruby-version: 2.5.3
-    - run: gem install awesome_bot
-    - run: awesome_bot README.md --allow-dupe --allow-redirect