ci: refactor broken link check (#82)

.drone.yml

@@ -38,9 +38,10 @@ steps:
   - name: link-validation
     image: thegeeklab/link-validator
     commands:
-      - link-validator --nice --external --skip-file .linkcheckignore
+      - link-validator --color=always
     environment:
       LINK_VALIDATOR_BASE_DIR: public
+      LINK_VALIDATOR_RETRIES: 3
 
   - name: build
     image: thegeeklab/hugo:0.97.3
@@ -82,6 +83,6 @@ trigger:
 
 ---
 kind: signature
-hmac: d1f24608ba60c2b06f704d0e2f0487c77bd6e316168e25ee605101cc166b3be1
+hmac: d173d1ebe0ce60057c11b6d0efd3e95a8f88a333fca3748d72685904e22776ca
 
 ...