Added check emails + fragments to lychee workflow

Co-Authored-By: MichaIng <micha@dietpi.com>

Author: adamlui

.github/workflows/validate-links-on-push-pr.yml

@@ -32,7 +32,8 @@ jobs:
         with:
           # Check all files, ignore ok/redir/blocked/rate-limited, exclude commonly down domains
           args: >-
-            . --no-progress
+            . --no-progress --include-mail
+            --include-fragments --index-files README.md,docs/README.md --exclude "#readme"
             --accept 200..299,300..399,403,429
             --cache --max-cache-age 3d
             --exclude ghostbrowser\.com