Updated e2e spec to remove warning

Request Type: docs

How to reproduce: the bug is fixed already in the code, but the document was not updated

Component(s): 

Impact: small

Complexity: small

This issue is related to: 

**Detailed Description:**

In step-6 of angular phonecat tutorial, the node snippet for protractor test is not up to date. The code was giving a warning message which has already been updated but in the step 6, it still shows the old code.

**Other Comments:**

lement(by.css(.phones li a)).click();

selenium will throw a warning message that more then one element found.

element.all(by.css('.phones li a')).first().click(); fixes the issue