ci: refactor broken link check (#531)

.drone.yml

@@ -39,9 +39,10 @@ steps:
   - name: link-validation
     image: thegeeklab/link-validator
     commands:
-      - link-validator --nice --external --skip-file .linkcheckignore
+      - link-validator --color=always --rate-limit 10 -e https://github.com/thegeeklab/hugo-geekdoc/edit/main/.*
     environment:
       LINK_VALIDATOR_BASE_DIR: exampleSite/public
+      LINK_VALIDATOR_RETRIES: 3
 
   - name: page-validation
     image: thegeeklab/lhci
@@ -286,6 +287,6 @@ depends_on:
 
 ---
 kind: signature
-hmac: 8a857bba8126ebb40acc7dfb24a86f1539d447df4ca3e4b3bdc8f78d21e2b51b
+hmac: 87d359c4cd5112149e7455a8e23070741f1d3332e3dbe0636aeb74209364b65c
 
 ...

.linkcheckignore

@@ -1,2 +0,0 @@
-.*/fonts/KaTeX_.*.ttf
-https://github.com/thegeeklab/hugo-geekdoc/edit/main/.*