style(docs-infra): fix docs examples for tslint rule semicolon (#38143)

This commit updates the docs examples to be compatible with the
`semicolon` tslint rule.

This is in preparation of updating the docs examples `tslint.json` to
match the one generated for new Angular CLI apps in a future commit.

PR Close #38143

aio/content/examples/ngmodules/e2e/src/app.e2e-spec.ts

@@ -97,11 +97,11 @@ describe('NgModule-example', function () {
 
         newContactButton.click().then(function () {
           input.click();
-          nextButton.click()
+          nextButton.click();
           expect(contacts.validationError.getText()).toBe('Name is required.');
           input.click();
           contacts.input.sendKeys('Watson');
-          saveButton.click()
+          saveButton.click();
           expect(contacts.contactNameHeader.getText()).toBe('Awesome Watson');
 
         });