docs: update shared example dependencies to Angular 7 and CLI 7 (#25892)

PR Close #25892

aio/tools/examples/shared/boilerplate/cli/e2e/protractor.conf.js

@@ -6,7 +6,7 @@ const { SpecReporter } = require('jasmine-spec-reporter');
 exports.config = {
   allScriptsTimeout: 11000,
   specs: [
-    './**/*.e2e-spec.ts'
+    './src/**/*.e2e-spec.ts'
   ],
   capabilities: {
     'browserName': 'chrome',
@@ -26,8 +26,8 @@ exports.config = {
   },
   onPrepare() {
     require('ts-node').register({
-      project: 'e2e/tsconfig.e2e.json'
+      project: require('path').join(__dirname, './tsconfig.e2e.json')
     });
     jasmine.getEnv().addReporter(new SpecReporter({ spec: { displayStacktrace: true } }));
   }
-};
+};