build: use linkinator for docs test (#216)

Author: JustinBeckwith

package.json

@@ -41,7 +41,7 @@
     "prepare": "npm run compile",
     "pretest": "npm run compile",
     "presystem-test": "npm run compile",
-    "docs-test": "blcl docs -r --exclude www.googleapis.com",
+    "docs-test": "linkinator docs -r --skip www.googleapis.com",
     "predocs-test": "npm run docs"
   },
   "dependencies": {
@@ -78,6 +78,6 @@
     "proxyquire": "^2.0.1",
     "source-map-support": "^0.5.6",
     "typescript": "~3.3.0",
-    "broken-link-checker-local": "^0.2.0"
+    "linkinator": "^1.1.2"
   }
 }