build: use config file for linkinator (googleapis#757)

Author: JustinBeckwith

handwritten/storage/linkinator.config.json

@@ -0,0 +1,7 @@
+{
+  "recurse": true,
+  "skip": [
+    "https://codecov.io/gh/googleapis/",
+    "www.googleapis.com"
+  ]
+}

handwritten/storage/package.json

@@ -46,7 +46,7 @@
     "compile": "tsc -p .",
     "fix": "gts fix && eslint --fix '**/*.js'",
     "prepare": "npm run compile",
-    "docs-test": "linkinator docs -r --skip www.googleapis.com",
+    "docs-test": "linkinator docs",
     "predocs-test": "npm run docs"
   },
   "dependencies": {
@@ -103,7 +103,7 @@
     "intelli-espower-loader": "^1.0.1",
     "jsdoc": "^3.6.2",
     "jsdoc-baseline": "^0.1.0",
-    "linkinator": "^1.1.2",
+    "linkinator": "^1.5.0",
     "mocha": "^6.0.0",
     "nock": "^10.0.1",
     "node-fetch": "^2.2.0",