build: use linkinator for docs test (#523)

Author: JustinBeckwith

package.json

@@ -49,7 +49,7 @@
  "proto:spanner": "mkdir -p proto && pbjs -t static-module -w commonjs -p node_modules/google-proto-files google/spanner/v1/spanner.proto | pbts -o proto/spanner.d.ts -",
  "proto:spanner_instance_admin": "pbjs -t static-module -w commonjs -p node_modules/google-proto-files google/spanner/admin/instance/v1/spanner_instance_admin.proto | pbts -o proto/spanner_instance_admin.d.ts -",
  "proto:spanner_database_admin": "pbjs -t static-module -w commonjs -p node_modules/google-proto-files google/spanner/admin/database/v1/spanner_database_admin.proto | pbts -o proto/spanner_database_admin.d.ts -",
- "docs-test": "blcl docs -r --exclude www.googleapis.com",
+ "docs-test": "linkinator docs -r --skip www.googleapis.com",
  "predocs-test": "npm run docs"
  },
  "dependencies": {
@@ -118,6 +118,6 @@
  "typescript": "~3.3.0",
  "uuid": "^3.3.2",
  "yargs": "^13.0.0",
- "broken-link-checker-local": "^0.2.0"
+ "linkinator": "^1.1.2"
  }
 }