chore: add missing tasks to package.json (#3325)

Author: Foxandxss

public/docs/_examples/package.json

@@ -10,7 +10,8 @@
     "serve": "lite-server -c=bs-config.json",
     "prestart": "npm run build",
     "start": "concurrently \"npm run build:watch\" \"npm run serve\"",
-    "protractor": "protractor protractor.config.js",
+    "protractor": "protractor",
+    "webdriver:update": "webdriver-manager update --standalone false --gecko false",
     "pretest": "npm run build",
     "test": "concurrently \"npm run build:watch\" \"karma start karma.conf.js\"",
     "pretest:once": "npm run build",