Reduce remark false positives by skipping guaranteed failures (#1626)

* Skip localhost and codepen (cloudflare protection produces 403s)

* Bump remark-lint-no-dead-urls to 1.1.0

* Block github links as it will flood with 429

package.json

@@ -18,18 +18,27 @@
     "validate-links": "remark ."
   },
   "devDependencies": {
+    "husky": "^4.2.3",
     "lint-staged": "^10.0.8",
     "pre-commit": "^1.2.2",
-    "husky": "^4.2.3",
     "prettier": "^2.0.1",
     "remark-cli": "^7.0.1",
     "remark-lint": "^6.0.5",
-    "remark-lint-no-dead-urls": "^1.0.1",
+    "remark-lint-no-dead-urls": "^1.1.0",
     "remark-validate-links": "^9.0.1"
   },
   "remarkConfig": {
     "plugins": [
-      "remark-lint-no-dead-urls"
+      [
+        "remark-lint-no-dead-urls",
+        {
+          "skipLocalhost": true,
+          "skipUrlPatterns": [
+            "^(https?://)(codepen.io)",
+            "^(https?://)(github.com)"
+          ]
+        }
+      ]
     ]
   },
   "dependencies": {