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/elements/e2e/src/app.e2e-spec.ts

@@ -14,7 +14,7 @@ describe('Elements', () => {
   const waitForText = (elem: ElementFinder) => {
     // Waiting for the element to have some text, makes the tests less flaky.
     browser.wait(async () => /\S/.test(await elem.getText()), 5000);
-  }
+  };
 
   beforeEach(() => browser.get(''));